> Is the answer to build a new social network? No.

I don't see why not. Quite a few of my friends are leaving social networks these days, mostly due to the lack of a specific purpose. I.e too much non sense. So I can totally see hooking up to new social networks that have specific purposes that accommodate my needs. I don't have an immediate need for this one right now, but I'm not adverse to trying it should I come across a situation where I do.