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Tumblr (stylized as tumblr and pronounced "tumbler") is an American
microblogging Microblogging is an online broadcast medium that exists as a specific form of blogging. A micro-blog differs from a traditional blog in that its content is typically smaller in both actual and aggregated file size. Micro-blogs "allow users to excha ...
and
social networking A social networking service (also social networking site or social media) is an online platform which people use to build social networks or social relationships with other people who share similar personal or career interests, activities, backg ...
website A website (also written as web site) is a collection of web pages and related content that is identified by a common domain name and published on at least one web server. Notable examples are wikipedia.org, google.com, and amazon.com. All publ ...
founded by
David Karp David Karp (born July 6, 1986) is an American web developer and entrepreneur. He is the founder and former CEO of the short-form blogging platform Tumblr. Karp began his career, without having received a high school diploma, as an intern under ...
in 2007 and currently owned by
Automattic Automattic Inc. is an American which was founded in August 2005 and is most notable for WordPress.com (a freemium blogging service), as well as its contributions to WordPress (an open source blogging software). The company's name is a play on fo ...
. The service allows users to post
multimedia Multimedia is a form of communication that combines different content forms such as text, audio, images, animations, or video into a single presentation, in contrast to traditional mass media, such as printed material or audio recordings. Popula ...

multimedia
and other content to a short-form
blog A blog (a truncation of "weblog") is a discussion or informational website published on the World Wide Web consisting of discrete, often informal diary-style text entries (posts). Posts are typically displayed in reverse chronological order, so ...
. Users can follow other users' blogs. Bloggers can also make their blogs private. For bloggers many of the website's features are accessed from a "dashboard" interface. As of August 12, 2019, Tumblr hosts over 475 million blogs. As of January 2016, the website had over 500 million monthly visitors, which dropped to less than 400 million by August 2019.


History

Development of Tumblr began in 2006 during a two-week gap between contracts at
David Karp David Karp (born July 6, 1986) is an American web developer and entrepreneur. He is the founder and former CEO of the short-form blogging platform Tumblr. Karp began his career, without having received a high school diploma, as an intern under ...
's software consulting company, Davidville (housed at Karp's former internship with producer-incubator
Fred Seibert Frederick Seibert (born September 15, 1951) is an American serial entrepreneur and television producer. He founded Frederator Studios in 1998, resigned in August 2020 after 22 years, and on February 23, 2021 announced a new cartoon production compa ...
's
Frederator Studios Frederator Studios is an American animation television production studio which is a division of Frederator Networks, Inc. and founded by Fred Seibert in 1997 with its first series launching in 1998. (Seibert resigned from Frederator in August 2020 ...
, which was located a block from Tumblr's current headquarters). Karp had been interested in tumblelogs (short-form blogs, hence the name Tumblr) for some time and was waiting for one of the established blogging platforms to introduce their own tumblelogging platform. As no one had done so after a year of waiting, Karp and developer
Marco Arment Marco Arment (born June 11, 1982) is an American iOS developer and web developer, podcaster, technology writer and former magazine editor. As a developer, he is best known for being chief technology officer for Tumblr and creating Instapaper and O ...
began working on their own tumblelogging platform. Tumblr was launched in February 2007, and within two weeks the service had gained 75,000 users. Arment left the company in September 2010 to focus on
Instapaper Instapaper is a bookmarking service that allows web content to be saved so it can be "read later" on a different device, such as an e-reader, smartphone, or tablet. The service was founded in 2008 by Marco Arment and has around 2 million user ...
. In early June 2012, Tumblr featured its first major brand
advertising campaign Advertising is a marketing communication that employs an openly sponsored, non-personal message to promote or sell a product, service or idea.William J. Stanton. ''Fundamentals of Marketing''. McGraw-Hill (1984). Sponsors of advertising are t ...
in conjunction with
Adidas Adidas AG (; stylized as adidas since 1949) is a German multinational corporation, founded and headquartered in Herzogenaurach, Germany, that designs and manufactures shoes, clothing and accessories. It is the largest sportswear manufacturer i ...
, who launched an official soccer Tumblr blog and bought placements on the user dashboard. This launch came only two months after Tumblr announced it would be moving towards paid advertising on its site. On May 20, 2013, it was announced that Yahoo and Tumblr had reached an agreement for Yahoo! Inc. to acquire Tumblr for $1.1 billion in cash. Many of Tumblr's users were unhappy with the news, causing some to start a petition, achieving nearly 170,000 signatures. David Karp remained CEO and the deal was finalized on June 20, 2013. Advertising sales goals were not met and in 2016 Yahoo wrote down $712 million of Tumblr's value.
Verizon Communications Verizon Communications Inc. is an American multinational telecommunications conglomerate and a corporate component of the Dow Jones Industrial Average. The company is headquartered at 1095 Avenue of the Americas in Midtown Manhattan, New York ...
acquired Yahoo in June 2017, and placed Yahoo and Tumblr under its
Oath Traditionally an oath (from Anglo-Saxon ', also called plight) is either a statement of fact or a promise with wording relating to something considered sacred as a sign of verity. A common legal substitute for those who conscientiously object to ...
subsidiary. Karp announced in November 2017 that he would be leaving Tumblr by the end of the year. Jeff D'Onofrio, Tumblr's President and COO, took over leading the company. The site, along with the rest of the Oath division (renamed Verizon Media Group in 2019), continued to struggle under Verizon. In March 2019,
SimilarWeb SimilarWeb is a website that provides web analytics services for businesses. The company offers its customers information on their clients' and competitors' website traffic volumes, referral sources which include keyword analysis and demographics, ...
estimated Tumblr had lost 30% of its user traffic since December 2018, when the site had introduced a stricter content policy with heavier restrictions on adult content (which had been a notable draw to the service). In May 2019, it was reported that Verizon was considering selling the site due to its continued struggles since the purchase (as it had done with another Yahoo property,
Flickr Flickr (pronounced "flicker" ) is an American image hosting and video hosting service, as well as an online community. It was created by Ludicorp in 2004 and is a popular way for amateur and professional photographers to host high-resolution pho ...
, via its sale to
SmugMug SmugMug is a paid image sharing, image hosting service, and online video platform on which users can upload photos and videos. The company also facilitates the sale of digital and print media for amateur and professional photographers. On April 2 ...
). Following this news,
Pornhub Pornhub is a Canadian-owned internet pornography website. It is one of several pornographic video-streaming websites owned by Mindgeek. , Pornhub is the 10th most trafficked website in the world and the third most-trafficked adult website after ...
's vice president publicly expressed interest in purchasing Tumblr, with a promise to reinstate the previous adult content policies. On August 12, 2019, Verizon Media announced that it would sell Tumblr to
Automattic Automattic Inc. is an American which was founded in August 2005 and is most notable for WordPress.com (a freemium blogging service), as well as its contributions to WordPress (an open source blogging software). The company's name is a play on fo ...
—operator of blog service WordPress.com and corporate backer of the open source blog software of the same name—for an undisclosed amount. Axios reported that the sale price was less than $3 million, a significant decrease over Yahoo's original purchase price. Automattic CEO
Matt Mullenweg Matthew Charles Mullenweg (born January 11, 1984) is an American entrepreneur and web developer living in Houston. He is known for developing the free and open-source web software WordPress, now managed by The WordPress Foundation. After droppi ...
stated that the site will operate as a complementary service to WordPress.com, and that there were no plans to reverse the content policy decisions made during Verizon ownership.


Features


Blog management

* Dashboard: The dashboard is the primary tool for the typical Tumblr user. It is a live feed of recent posts from blogs that they follow. Through the dashboard, users are able to comment, reblog, and like posts from other blogs that appear on their dashboard. The dashboard allows the user to upload text posts, images, videos, quotes, or links to their blog with a click of a button displayed at the top of the dashboard. Users are also able to connect their blogs to their Twitter and Facebook accounts; so whenever they make a post, it will also be sent as a tweet and a status update. * Queue: Users are able to set up a schedule to delay posts that they make. They can spread their posts over several hours or even days. * Tags: Users can help their audience find posts about certain topics by adding tags. If someone were to upload a picture to their blog and wanted their viewers to find pictures, they would add the tag #picture, and their viewers could use that word to search for posts with the tag #picture. * HTML editing: Tumblr allows users to edit their blog's theme HTML coding to control the appearance of their blog. Users are also able to use a custom domain name for their blog.


Mobile

With Tumblr's 2009 acquisition of Tumblerette, an
iOS iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that powers many of the company's mobile devices, including the iPhone and iPod Touch; the term a ...
application created by Jeff Rock and Garrett Ross, the service launched its official
iPhone The iPhone is a line of smartphones designed and marketed by Apple Inc. that use Apple's iOS mobile operating system. The first-generation iPhone was announced by former Apple CEO Steve Jobs on January 9, 2007. Since then Apple has annually ...
app. The site became available to
BlackBerry The blackberry is an edible fruit produced by many species in the genus ''Rubus'' in the family Rosaceae, hybrids among these species within the subgenus ''Rubus'', and hybrids between the subgenera ''Rubus'' and ''Idaeobatus''. The taxonomy of t ...
smartphones on April 17, 2010, via a Mobelux application in
BlackBerry World BlackBerry World (previously known as BlackBerry App World) is an application distribution service, aka an 'app store', and application by BlackBerry Limited; for BlackBerry 10 devices, the BlackBerry PlayBook, and a majority of BlackBerry OS device ...
. In June 2012, Tumblr released a new version of its iOS app, Tumblr 3.0, allowing support for
Spotify Spotify (/ˈspɒtɪfaɪ/; Swedish: spɔ̂tːɪfaj, is a Swedish audio streaming and media services provider, founded in 2006 by Daniel Ek. Spotify is incorporated in Luxembourg as Spotify Technology S.A, and is headquartered in Stockholm, Swed ...
, hi-res images and offline access. An app for Android is also available. A
Windows Phone Windows Phone (WP) is a discontinued family of mobile operating systems developed by Microsoft for smartphones as the replacement successor to Windows Mobile and Zune. Windows Phone featured a new user interface derived from the Metro design lang ...
app was released on April 23, 2013. An app for
Google Glass Google Glass, or simply Glass, is a brand of smart glasses—an optical head-mounted display designed in the shape of a pair of glasses. It was developed by X (previously Google X) with the mission of producing a ubiquitous computer. Google Glas ...
was released on May 16, 2013.


Inbox and messaging

Tumblr blogs may optionally allow users to submit questions, either as themselves or anonymously, to the blog for a response. Tumblr also offered a "fan mail" function, allowing users to send messages to blogs that they follow. On November 10, 2015, Tumblr introduced an integrated
instant messaging#REDIRECT Instant messaging#REDIRECT Instant messaging {{R from other capitalisation ...
{{R from other capitalisation ...
function, allowing users to chat with other Tumblr users. The feature was rolled out in a "viral" manner; it was initially made available to a group of 1500 users, and other users could receive access to the messaging system if they were sent a message by any user that had received access to the system itself. The messaging platform replaces the fan mail system, which was deprecated. The ability to send posts to others via the Dashboard was added the following month. In November 2019, Tumblr introduced "group chats"—
ephemeral Ephemerality (from the Greek word , , meaning 'lasting only one day') is the concept of things being transitory, existing only briefly. Typically the term ephemeral is used to describe objects found in nature, although it can describe a wide ra ...
chat room The term chat room, or chatroom, is primarily used to describe any form of synchronous conferencing, occasionally even asynchronous conferencing. The term can thus mean any technology ranging from real-time online chat and online interaction with ...
s surfaced via searches, designed to allow users to share content in real-time with users who share their interests. Posts disappear after 24 hours and cannot be edited.


Original content

In May 2012, Tumblr launched Storyboard, a blog managed by an in-house editorial team which features stories and videos about noteworthy blogs and users on Tumblr. In April 2013, Storyboard was shut down. In March 2018, Tumblr began to syndicate original video content from Verizon-owned video network
go90 go90 was an American Internet television service and mobile app owned and operated by Verizon Communications. The service was positioned as a mobile-oriented "social entertainment platform" targeted primarily towards millennials, featuring a mixtu ...
, as part of an ongoing integration of Oath properties, and reported plans to wind down go90 in favor of using Oath properties to distribute its content instead. This made the respective content available internationally, since go90 is a U.S.-only service.


Usage

Tumblr has been noted for the socially progressive views of its users. In 2011, the service was most popular with the teen and college-aged user segments with half of Tumblr's visitor base being under the age of 25. In April 2013, the website received more than 13 billion global page views. User activity, measured by the number of blog posts each day, peaked at over 100 million in early 2014 and declined in each of the next three years, to approximately 30 million by October 2018. As of May 2019, Tumblr hosts over 465 million blogs and more than 172 billion posts in total with over 21 million posts created on the site each day.


Adult content

Tumblr was noted by technology journalists as having a sizable amount of pornographic content. An analysis conducted by news and technology site TechCrunch on May 20, 2013, showed that over 22% of all traffic in and out of Tumblr was classified as pornography. In addition, a reported 16.45% of blogs on Tumblr exclusively contained pornographic material. Following July 2013 and its acquisition by Yahoo, Tumblr progressively restricted adult content on the site. In July 2013, Tumblr began to filter content in adult-tagged blogs from appearing in search results and tagged displays unless the user was logged in. In February 2018, Safe Mode (which filters "sensitive" content and blogs) became enabled by default for all users on an opt-out basis. On December 3, 2018, Tumblr announced that effective December 17, all images and videos depicting sex acts, and real-life images and videos depicting human genitalia or "female-presenting" nipples, would be banned from the service. Exceptions are provided for illustrations or art that depict nudity, nudity related to "political or newsworthy speech", and depictions of "female-presenting" nipples in relation to medical events such as
childbirth Childbirth, also known as labour or delivery, is the ending of pregnancy where one or more babies leaves the uterus by passing through the vagina or by Caesarean section. In 2015, there were about 135 million births globally. About 15 million w ...
,
breastfeeding Breastfeeding, also called nursing, is the process of feeding a mother's breast milk to her infant, either directly from the breast or by expressing (pumping out) the milk from the breast and bottle-feeding it to the infant. The World Health ...
,
mastectomy Mastectomy is the medical term for the surgical removal of one or both breasts, partially or completely. A mastectomy is usually carried out to treat breast cancer. In some cases, people believed to be at high risk of breast cancer have the operati ...
and
gender reassignment surgery Sex reassignment surgery (SRS), also known as gender reassignment surgery (GRS) and several other names, is a surgical procedure (or procedures) by which a transgender person's physical appearance and function of their existing sexual characterist ...
. The rules do not apply to text content. All posts in violation of the policy are hidden from public view, and repeat offenders may be reprimanded. Shortly prior to the announcement, Tumblr's Android app was patched to remove the ability to disable Safe Mode. The change faced wide criticism among Tumblr's community; in particular, it has been argued that the service should have focused on other major issues (such as controlling
hate speech Hate speech is defined by the ''Cambridge Dictionary'' as "public speech that expresses hate or encourages violence towards a person or group based on something such as race, religion, sex, or sexual orientation". Hate speech is "usually thought ...
or the number of porn-related
spambot A spambot is a computer program designed to assist in the sending of spam. Spambots usually create accounts and send spam messages with them. Web hosts and website operators have responded by banning spammers, leading to an ongoing struggle betwee ...
s on the service), and that the service's adult community provided a platform for
sex education Sex education is the instruction of issues relating to human sexuality, including emotional relations and responsibilities, human sexual anatomy, sexual activity, sexual reproduction, age of consent, reproductive health, reproductive rights, saf ...
, independent adult performers (especially those representing
LGBT ' or ' is an initialism that stands for lesbian, gay, bisexual, and transgender. In use since the 1990s, the term is an adaptation of the initialism ', which began to replace the term ''gay'' in reference to the broader LGBT community beginning ...
communities who feel that they are underrepresented by a
heteronormative Heteronormativity is the belief that heterosexuality is the default, preferred, or normal mode of sexual orientation. It assumes the gender binary (i.e., that there are only two distinct, opposite genders) and that sexual and marital relations are ...
mainstream industry) seeking an outlet for their work, and those seeking a safe haven from "over-policed" platforms to share creative work with adult themes. Tumblr stated that it was using various algorithms to detect potential violations, in combination with manual reviews. Users quickly discovered a wide array of
false positive A false positive is an error in binary classification in which a test result incorrectly indicates the presence of a condition such as a disease when the disease is not present, while a false negative is the opposite error where the test result inc ...
s. A large number of users scheduled protest actions on December 17th. On the day the ban took effect, Tumblr issued a new post clarifying the new policy, showcasing examples of adult images still allowed on the service, and stating that it "fully recognized" its "special obligation" to serving its LGBT userbase, and that "LGBTQ+ conversations, exploration of sexuality and gender, efforts to document the lives and challenges of those in the sex worker industry, and posts with pictures, videos, and GIFs of gender-confirmation surgery are all examples of content that is not only permitted on Tumblr but actively encouraged." ''Wired'' cited multiple potential factors in the ban, including that the presence of adult content made the service unappealing to potential advertisers, the
Stop Enabling Sex Traffickers Act The Stop Enabling Sex Traffickers Act (SESTA) and Allow States and Victims to Fight Online Sex Trafficking Act (FOSTA) are the U.S. Senate and House bills that as the FOSTA-SESTA package became law on April 11, 2018. They clarify the country's sex ...
(a U.S. federal law which makes websites liable for knowingly assisting or facilitating illegal
sex trafficking#REDIRECT Sex trafficking ...
), as well as heavy restrictions on adult content imposed by
Apple An apple is an edible fruit produced by an apple tree (''Malus domestica''). Apple trees are cultivated worldwide and are the most widely grown species in the genus ''Malus''. The tree originated in Central Asia, where its wild ancestor, ''Ma ...
for software offered on the
iOS App Store The App Store is a digital distribution platform, developed and maintained by Apple Inc., for mobile apps on its iOS and iPadOS operating systems. The store allows users to browse and download apps developed with Apple's iOS Software Developmen ...
(which similarly prompted several
Reddit Reddit (, stylized in all lowercase) is a social news aggregation, web content rating, and discussion website, recently including livestream content through Reddit Public Access Network. Registered members submit content to the site such as li ...
clients to heavily frustrate the ability for users to access forums on the site that contain adult content).


Corporate affairs

Tumblr's headquarters is at
770 Broadway 770 Broadway is a large mixed-use commercial office building in NoHo, Manhattan, in Lower Manhattan, New York City. The building occupies an entire square block between 9th and 8th Streets from north to south, and between Broadway and Fourth Avenu ...
in
New York City New York City (NYC), often simply called New York, is the most populous city in the United States. With an estimated 2019 population of 8,336,817 distributed over about , New York City is also the most densely populated major city in the Unit ...

New York City
. The company also maintains a support office in
Richmond, Virginia (Thus do we reach the stars) , image_map = , mapsize = 250 px , map_caption = Location within Virginia , pushpin_map = Virginia#USA , pushpin_label ...
. As of June 1, 2017, Tumblr had 411 employees. The company's logo is set in
Bookman Old Style Bookman or Bookman Old Style, is a serif typeface. A wide, legible design that is slightly bolder than most body text faces, Bookman has been used for both display typography and for printing at small sizes such as in trade printing, and less common ...
with some modifications.


Funding

Tumblr had received about $125 million of funding from investors. The company has raised funding from Union Square Ventures, Spark Capital, Martín Varsavsky, John Borthwick (Betaworks), Fred Seibert, Krum Capital, and Sequoia Capital (among other investors).Anthony Ha, VentureBeat.
Blog startup Tumblr goes bi-coastal with Sequoia Investment
" November 12, 2010.
In its first round of funding in October 2007, Tumblr raised $750,000 from Spark Capital and Union Square Ventures. In December 2008 the company raised $4.5 million in Series B funding and a further $5 million in April 2010. In December 2010 Tumblr raised $30 million in Series D funding. The company had an $800 million valuation in August 2011. In September 2011 the company raised $85 million in a round of funding led by Greylock Partners and Insight Venture Partners.


Revenue sources

In an interview with Nicole Lapin of ''Bloomberg West'' on September 7, 2012, David Karp said the site was monetized by advertising. Their first advertising launch started in May 2012 after 16 experimental campaigns. Tumblr made $13 million in revenue in 2012 and hoped to make $100 million in 2013. Tumblr reportedly spent $25 million to fund operations in 2012. In 2013, Tumblr began allowing companies to pay to promote their own posts to a larger audience. Tumblr Head of Sales, Lee Brown, has quoted the average ad purchase on Tumblr to be nearly six figures. Tumblr also allows premium theme templates to be sold for use by blogs. In July 2016, advertisements were implemented by default across all blogs. Users may opt-out, and the service stated that a revenue sharing program would be implemented at a later date.


Criticism


Copyright issues

Tumblr has received criticism for copyright violations by participating bloggers; however, Tumblr accepts Digital Millennium Copyright Act (DMCA) OCILLA, take-down notices. Tumblr's visual appeal has made it ideal for photoblogs that often include copyrighted works from others that are re-published without payment. Tumblr users can post unoriginal content by "Reblogging", a feature on Tumblr that allows users to re-post content taken from another blog onto their own blog with attribution.


Security

Tumblr has been forced to manage spam and security problems. For example, a chain letter scam in May 2011 affected 130,000 users. On December 3, 2012, Tumblr was attacked by a cross-site scripting worm deployed by the Troll (Internet), Internet troll group Gay Nigger Association of America. The message urged users to harm themselves and criticized blogging in general.


User interface changes

In 2015, Tumblr faced criticism by users for changes to its reblog mechanisms. In July 2015, the system was modified so that users cannot remove or edit individual comments by other users when reblogging a post; existing comments can only be removed all at once. Tumblr staff argued that the change was intended to combat "misattribution", though this move was met by criticism from ‘ask blogs’ and ‘RP blogs’, which often shortened long chains of reblogs between users to improve readability. In September 2015, Tumblr changed how threads of comments on reblogged posts are displayed; rather than a nested view with indentations for each post, all reblogs are now shown in a flat view, and user avatars were also added. The change was intended to improve the legibility of reblogs, especially on mobile platforms, and complements the inability to edit existing comments. Although some users had requested such a change to combat posts made illegible by extremely large numbers of comments on a reblogged post, the majority of users (even those who had requested such a change) criticized the new format. ''The Verge'' was also critical of the changes, noting that it was cleaner, but made the site lose its "nostalgic charm".


Userbase behaviour

While Tumblr's userbase has generally been received as accommodating people from a wide range of ideologies and identities, a common point of criticism is that attitudes from users on the site stifle discussion and discourse. In addition, several incidents involving serious behaviour from the userbase have been publicised in recent years; these include the ‘Independence Day raid’ in 2014, in which users of Tumblr attempted to raid 4chan, only for the raid to backfire when 4chan retaliated, as well as an incident in 2015, in which members of the ''Steven Universe'' fandom drove an artist to the point of Suicide attempt, attempting suicide over their artwork, in which they drew characters thin that are typically seen as being 'fat' in the show. In 2018, ''Kotaku'' reporter Gita Jackson described the site as a 'joyless black hole', citing how the website's design and functionality led to 'fandoms spinning out of control', as well as an environment which inhibited discussion and discourse.


Promotion of self-harm and suicide

In February 2012, Tumblr banned blogs that promote or advocate suicide, self-harm and eating disorders (pro-ana). The suicide of a British teenager, Tallulah Wilson, raised the issue of suicide and self-harm promotion on Tumblr as Wilson was reported to have maintained a self-harm blog on the site. A user on the site is reported to have sent Wilson an image of a noose accompanied by the message: "here is your new necklace, try it on." In response to the Wilson case, Maria Miller, the UK's minister for culture, media, and sport, said that social media sites like Tumblr need to remove "toxic" self-harm content. Searching terms like "depression", "anxiety", and "suicide" on Tumblr now brings up a Public service announcement, PSA page directing the user to resources like the National Suicide Prevention Lifeline, national suicide lifeline, and 7 Cups; as well as an option to continue to the search results. There are concerns of some Tumblr posts glorifying suicide and depression among young people.


Politics

In February 2018, BuzzFeed published a report claiming that Tumblr was utilized as a distribution channel for Russian agents to influence American voting habits during the 2016 United States presidential election, 2016 presidential election. Despite policies forbidding hate speech, Tumblr has been noted for hosting content from Nazis and white supremacists. In May 2020, Tumblr announced that it will remove reblogs of terminated hate speech posts, specifically Nazi and white supremacist content.


Censorship

Several countries have blocked access to Tumblr because of pornography, religious extremism or LGBT content. These countries include China, Indonesia, Kazakhstan and Iran. In February 2016, the Indonesian government temporarily blocked access to Tumblr within the country because the site hosts pages that carried porn. The government shortly reversed its decision to block the site and said it had asked Tumblr to self-censorship, self-censor its pornographic content.


Adult content ban

In November 2018, Tumblr's
iOS iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that powers many of the company's mobile devices, including the iPhone and iPod Touch; the term a ...
app was removed by
Apple An apple is an edible fruit produced by an apple tree (''Malus domestica''). Apple trees are cultivated worldwide and are the most widely grown species in the genus ''Malus''. The tree originated in Central Asia, where its wild ancestor, ''Ma ...
from its App Store (iOS/iPadOS), App Store after illegal child pornography images were found on the service. Tumblr stated that all images uploaded to the service are scanned against an industry database, but that a "routine audit" had revealed images that had not yet been added to the database. In the wake of the incident, a number of Tumblr blogs—particularly those dealing primarily in adult-tagged artwork such as erotica, as well as Study (art), art study and human anatomy, anatomy resources—were also deleted, with affected users taking to other platforms (such as Twitter) to warn others and complain about the deletions, as well as encourage users to back up their blog's contents. Tumblr subsequently removed the ability to disable "Safe Mode" from its Android app, and announced a wider ban on explicit images of sex acts and nudity on the platform with certain limited exceptions. Tumblr decided to use an automatic content recognition system which resulted in many non-pornographic images being removed from the platform. The site was known for its popularity with adult content that attracted women and other under-served audiences.


Notable users

Celebrities who have used Tumblr include Taylor Swift, Lady Gaga, Ariana Grande, Zooey Deschanel, John Mayer, B.o.B, Soulja Boy, Fergie (singer), Fergie, Anthony Bourdain, John Green (author), John Green, Zayn Malik, Zayn, Lana Del Rey, Grimes (musician), Grimes, Hayley Williams, Frank Ocean, Lorde, Sufjan Stevens, Jhené Aiko, Amandla Stenberg, Karlie Kloss, and Dianna Agron. On October 21, 2011, then-U.S. President Barack Obama created a Tumblr.


See also

* Comparison of microblogging services * Comparison of free blog hosting services * List of social networking websites * Tech companies in the New York metropolitan area


References


External links

* {{authority control Tumblr, 2007 establishments in New York City 2013 mergers and acquisitions 2019 mergers and acquisitions Automattic Blog hosting services Companies based in Manhattan Internet properties established in 2007 Microblogging software Microblogging services Social media Software companies based in New York City Software companies of the United States Webby Award winners WordPress