A
social networking service is an online platform that people use to build social networks or
social relation
A social relation or also described as a social interaction or social experience is the fundamental unit of analysis within the social sciences, and describes any voluntary or involuntary interpersonal relationship between two or more individuals ...
ships with other people who share similar personal or career interests, activities, backgrounds or real-life connections.
This is a list of notable defunct
social networking services that have Wikipedia articles.
References
{{DEFAULTSORT:Social networking websites, defunct
Social networking defunct
Defunct websites