It's a shame because there are some interesting, balanced people on it, but I couldn't stand the environment. Any place where arrogance, racism and misogyny are the norm isn't somewhere I want to hang out.
When I first discovered the MBTI, I spent quite a bit of time on the INTP forum. I really enjoyed their sense of humour and met quite a few intelligent, engaging people on it. Eventually most of the people I knew left and then they're was little to keep me there.
What about you, any online water holes you frequent?