I was gonna suggest Fetlife as well but that is a good point of it being more of a forum. However they do have groups created for people looking to date and meet up!
It is probably the best way to go for everything all around!
Remember collarme.com? I think collarspace sprouted from that site. Anyway, I was watching the ID channel on TV. For those that don't know 'Investigation Discovery.' Ever wonder how many murders happen in this country? Well....enough to fill up a TV station. 24/7. I was watching a show and the site name popped up on one of their shows with a murder involved. That sucks. I liked that site also. It's more difficult when you don't live in a larger size City. Also, whatever site you may like, be careful of the scams.