Sorry to have ignored your thread!
1. No, I don't do it for dating, but yes I do use some friend-making sites.
2. Metropolis friends section. (not that crappy facebook wannabe page)
3. sucess 30% failure 70%
It's good for making friends, if you're woman, expect to get replies you don't want. Even if your ad says FRIENDS ONLY, guys will still send you some nasty, perverted messages. :X