You have to be careful. I was on many forums using the same Userid a few years ago. Another guy got nasty with somebody I had known a long time, and I came to his defense. The A-hole found me on several other boards and harassed me constantly. He got my email address and phone number too. Couldn't control himself and wound up with a visit from a local police officer because he made threats. I'm extra cautious now. I've seen people who seemed fine come unhinged over something trivial like a remark about their avatar and go off the deep end.