Other startups have had the emphasis (or requirement) of face-to-face interaction. This one is specifically for dating. From what I hear, it actually works quite well.

http://www.zoodango.com/

Zoodango seems interesting. I think making things random sounds much more appealing than stuff you setup up specifically in advance so that you take out more of that 'guilt' factor.

Good, I guess it's coming. I only hope that people will make it open not only for dating, but meeting other interesting people...

Yeah... that network would get kinky fast.