who is your 'friend' on FaceBook and MySpace exactly?

semanticcommunities.com — On-Line Social Relatoinships illustrated. Some social networking sites, like Facebook or MySpace, require a confirmation when a user wishes to list another user as a “friend”. Other sites, like LiveJournal for example, do not impose this requirement. This, “one way”, relationship is usually referred in terms of FOAF as “knows”. There are no restr