This whole thing is pointless because it doesn't do anything useful. There is literally no difference between using the website or simply asking your friends if they know anyone you might hit it off with, and in Facebook's case, there are plenty of superfluous "friends" people have who may actually be terrible people. They allege "social pressure" in these cases, but on the whole it's a stupid term that generally doesn't mean anything.

OkCupid is still the pinnacle of online dating and probably will be for a long time, because the whole point of dating is that you actually go out with someone and see if you hit it off. Just because someone is a friend of a friend doesn't mean they're any better or different than Random Person A, and if anything, you're greatly limiting your pool of options. And lastly, if you're having trouble meeting someone and don't live in the sticks, the problem is likely you.

P.S. -- The site name is exceedingly dumb.