Why is Facebook still wildly popular but MySpace, not
Friendster, MySpace and others have come and gone but Facebook is still here and extremely popular. Why?
The short of it is that during a crucial point in time Facebook positioned itself as a high-class alternative to MySpace. But the article puts it better than I do.
MySpace Tom peaced out after its purchase and News Corp. didn't really know what to do with it.
I really liked Orkut. Damn google.