>I predict future successful social networks will be somewhat like HN or reddit--semi-anonymous, with no real connection to real life. If they can surround you with peers clustered around your interest profile, perhaps we could grow organic communities around professions and hobbies that dynamically or elastically determine membership and open channels of communication (as opposed to the current process of self-selection and direct messaging). I don't know, I'm rambling now.

Isn't this problem already solved by discussion boards? :D Or is your idea different from them in some way? Please feel free to share your views.