I pointed that out (Facebook even took them to court later on). But I remember running into at least two German equivalents that couldn't be based more on Facebook than merely fitting the description of "MySpace but for coeds".

The point is that Facebook wasn't revolutionary. It just seems so in hindsight because of its success and how much it overshadows everything else.

Everything stands on the shoulders of giants. Sometimes some of the giants get squashed. Sometimes some fall off the other giants. But in the end it's just a massive pyramid of giants standing on each other's shoulders.

Facebook, MySpace, LiveJournal, GeoCities. There was plenty of cross-pollination and incremental changes. Revolutions? Not so much.