I hate the way people who have never been on FB judge it and tell others not to go on there, when they know nothing about it. I've never had any problems there and it's great reconnecting with people who I lost touch with over the years.
The problems come when you allow anyone onto your friends list, just to look popular. As with any site, this one particulalrly, there will always be losers, trouble makers and bullies. Infact, most of the nastiest individuals I've encountered, have been on AB.