Social Networks are in their phase 1, where all the people are on the same site but that's not how the future will be. Many friends I have in the alternative community for instance do not feel at home on Facebook or myspace... indeed the bland middle-classness of Facebook turns me off. Humans are tribal animals everywhere but the web, and I believe this is purely because the idea of social networking online is still in it's infancy. The drive for change will come from several directions: Cool kids will soon want something more exclusive than Facebook or myspace, or wherever the adults and other uncool people hang out. Possibly even a closed, invite only type space? Similarly, those from other communities will forge their own dedicated sites - religious groups, alternative living groups, basically all those who separate themselves in the real world. They don't want to throw sheep, or poke - they want to share verse, or crochet patterns, or tyre recommendations - you get th...