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[[File:Ad-tech London 2010 (5).JPG|thumb|Facebook on the Ad-tech 2010]]
[[Social networking service]]s are the most prominent type of virtual community. They are either a website or software platform that focuses on creating and maintaining relationships. [[Facebook]], [[Twitter]], and [[Instagram]] are all virtual communities. With these sites, one often creates a profile or account, and adds friends or follow friends. This allows people to connect and look for support using the social networking service as a gathering place. These websites often allow for people to keep up to date with their friends and acquaintances' activities without making much of an effort.<ref>{{cite journal|last1=Quan-Hasse |first1=A. |last2= Young |first2=A. L. |year=2010 |title= Uses and Gratifications of Social Media: A Comparison of Facebook and Instant Messaging|journal=Bulletin of Science, Technology & Society|volume= 30|issue=5|pp=350–361
===Specialized information communities===
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