PubSub.com was a prospective search engine for searching

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 s ...

s, press releases,

Usenet Usenet () is a worldwide distributed discussion system available on computers. It was developed from the general-purpose Unix-to-Unix Copy (UUCP) dial-up network architecture. Tom Truscott and Jim Ellis conceived the idea in 1979, and it wa ...

, USGS earthquake alerts, SEC filings and FAA Flight Delay information. The site, founded in 2002 by

Bob Wyman Bob, BOB, or B.O.B. may refer to: Places *Mount Bob, New York, United States * Bob Island, Palmer Archipelago, Antarctica People, fictional characters, and named animals *Bob (given name), a list of people and fictional characters * Bob (surnam ...

and Salim Ismail, operated by storing a user's search term, making it a ''subscription'', and checking it against posts on blogs which

ping Ping may refer to: Arts and entertainment Fictional characters * Ping, a domesticated Chinese duck in the illustrated book '' The Story about Ping'', first published in 1933 * Ping, a minor character in ''Seinfeld'', an NBC sitcom * Ping, a c ...

the search engine. When a new match was found, the user was notified—even if it occurred months after the initial search. This feature led PubSub to call itself a "matching engine". Results could be read on the service's website or on an optional sidebar, available for both

Internet Explorer Internet Explorer (formerly Microsoft Internet Explorer and Windows Internet Explorer, commonly abbreviated IE or MSIE) is a series of graphical web browsers developed by Microsoft which was used in the Windows line of operating systems ( ...

and Mozilla Firefox, written by Malcolm Pollack and Duncan A. Werner respectively, or via

RSS RSS ( RDF Site Summary or Really Simple Syndication) is a web feed that allows users and applications to access updates to websites in a standardized, computer-readable format. Subscribing to RSS feeds can allow a user to keep track of many di ...

. Results could also be delivered to remote systems via Restful APIs, email or

XMPP Extensible Messaging and Presence Protocol (XMPP, originally named Jabber) is an open communication protocol designed for instant messaging (IM), presence information, and contact list maintenance. Based on XML (Extensible Markup Language), i ...

Financial trouble

PubSub ran into problems in 2006 as noted in a blog entry by Bob Wyman and is now dead. The PubSub website was offline from 15 January 2007 until 15 August 2007. Its assets were purchased by Something Simpler. Something Simpler planned to relaunch the site as a user friendly version of

Yahoo! Pipes Yahoo! Pipes was a web application from Yahoo! that provided a graphical user interface for building data mashups that aggregate web feeds, web pages, and other services; creating Web-based apps from various sources; and publishing those apps. ...

. Something Simpler is planning to launch a

Facebook Facebook is an online social media and social networking service owned by American company Meta Platforms. Founded in 2004 by Mark Zuckerberg with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Mosk ...

application similar to the original PubSub sidebars. As November 18, 2009, PubSub v2.0 was publicly accessible again. It ceased operations in August 2013.Se
Archive.org's captures
compar
the August 2013 state
with the next capture
July 2015

References

*Mossberg, Walter S. "Pubsub, Rollyo Offer Web Search Services The Big Engines Don't." ''The Wall Street Journal'', 2 Feb 2006, B1. *Arrington, J. Michael "PubSub: They're Baaaaack." ''Techcrunch'' 14 Aug 200

*Wyman, Bob. "PubSub.com V2.0 is live Under New Management". ''As I may think' 18 Nov 200

Blog search engines Defunct internet search engines {{searchengine-website-stub