Some have thrown around the idea of a GamingSE guild, or others have their own, so at the very least to begin, who's where (what server) and for something more protracted, who has plans to do what?
I'm not sure if it would be better or worse from a QA-feeding point of view to be on a server with someone you know or not, seems like there are reasons for either, though if you're chatting up people you know one of you could try to turn passing questions into something more.