r/Fitness does a weekly "Moronic Monday", a judgment-free thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. I thought this seemed like a useful thing to have here - after all, the concepts discussed on LessWrong are probably at least a little harder to grasp than those of weightlifting. Plus, I have a few stupid questions of my own, so it doesn't seem unreasonable that other people might as well.
Someone introducing themselves to you produces "seething, ulcerating rage"? Have you ever considered counseling or therapy?
In comment threads to feminist blog posts in reaction to a particular xkcd comic, I've seen good reasons why certain people might be very pissed off when other people try to talk to them somewhere they cannot get away from, though they mostly apply to women being talked to by men.