It's funny that this thread came up. I just saw a commercial for a dating web site that I thought was very clever. Instead of finding people and then going out on dates (or meeting for sex or whatever), you go on there and say, "Here's what I want to do on a date", and then presumably a bunch of gorgeous women say, "Hey, that sounds fun", and then they go with you and do that activity. And then presumably afterwards you have sex that's really good because you had a good date.
It was called howaboutwe.com. Give it a try and report back.