| http://www.w3.org/ns/prov#value | - Facebook is a social networking service and website launched in February 2004, operated and privately owned by Facebook Inc.[1] As of February 2012, Facebook has more than 845 million active users.[5] Users must register before using the site, after which they may create a personal profile, add other users as friends, and exchange messages, including automatic notifications when they update their
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