Personalized private social networks might possibly have a future. See Diaspora. It would seem that in order to disrupt a market leader, you concentrate on wha

Personalized private social networks might possibly have a future. See Diaspora. It would seem that in order to disrupt a market leader, you concentrate on what they're not excelling at or what feature users want but they don't have, and you go for that. What's Facebook bad at? What do Facebook users want that Facebook doesn't offer? I doubt one can totally steal Facebook's social market share in a short amount of time, but certain add-ons to Facebook are less than sufficient. Facebook Q&A is an example; see Quora. In my humble opinion, Facebook Classifieds is another.