None of those options really apply to me, so I didn't vote. I rarely ever PM anyone, and it's rare that I ever get one, either. When I have PMed it's basically only to trade info. It's not very social, as in getting to know someone. Sometimes when I do get a PM I never know when the exchanges are finished. It's hard to explain, but I never know if I'm supposed to PM back every time I get one, or if the person was just making a comment, and I'm supposed to leave it at that. That's when I get really anxious, and will sometimes think about what to say for days before replying, if I ever do. Sounds kind of stupid, huh?