OKC and POF are both ok, weed out on profiles, don't meet them unless you're ready, and always in public area. Don't let them take you home on the first date, etc (basically what everyone has said).
Meetup.com. It's free. It's where groups get together and make new friends. There are tons of single groups. Some people go to the singles and just socialize, maybe get a number. There are also just groups for people of similar interests. I met my current Fiance at a meetup. It was bowling for nerdy type people (think WoW nerds, with a touch of MTG). I am into those things and was looking for new friends, I met Steve, he asked me out, 2 years later, we're getting married. I also got to make a lot of new friends!
I've decided to leave 3FC, In the crowd of so many, those of us with no success that have the audacity to feel bad about our incredibly slow and almost stagnate weight loss, are merely a nuisance to those that are successful. I hope everyone else finds the support they need.