I think we just need something like a platform where the goal isn't to just "add everyone you know " and "share everything you do". Something like a social blog

I think we just need something like a platform where the goal isn't to just "add everyone you know " and "share everything you do". Something like a social blogging site where you only write thoughts of decent quality and only add people you actually tend to talk to? I'd say maybe something like Tumblr, but Tumblr users just seem to emulate Facebook using Tumblr. Also, the above ideals make the platform difficult for any investor to support, because it is in contrast to the normal "grow!!!!!!!" direction that most startups want to take.