It's a mixed bag, to be sure. I got friended by a girl I haven't seen since eighth grade, and she was basically finding out if my brother, on whom she has a crush, talks about her. Blech. On the other hand, I did get what seemed to be a sincere apology from a girl who was really nasty to me when we were in high school, which was kind of nice. So who knows? Maybe they've grown up, feel bad, and are really wishing you well!