It is held that MySpace and Facebook are inhabited by different classes, in America at least. America does not have a historic class legacy, so this paper is quite interesting as it allows one to point to the attributes of a phenomenon in order to describe it better.
Facebook= college, university, white, networking professionals = hegemony
MySpace = the Other
More? The US military bans access to MySpace and not Facebook. Soldiers who may be college-educated are of the officer class and use Facebook. MySpace is popular among the recruits from poorer areas who are most likely to swell the rank and file.