I have been trying to make more friends in the real and virtual world the past two years, and I have been pretty successful. Most of my new friends come from the following: Volleyball, MtG, or a writing group.

Really, I think that it comes down to make making or joining a space with a shared activity and moderating out the crap.

The problem is most communities are losing those spaces in favor of private social clubs. That's what we need to fight.