Sort of. On a couple of sites I would just make a profile, set it all up and on one of the sites I put a picture of myself but I wouldn't do anything on there. I just wanted to see if I could grab a girls attention but sadly I only got 2 girls and they weren't really my types and that was like 3-4 years ago I think. Other than that I haven't really done any online dating, I'd rather meet a girl in real life. Although there was one time where I was on a site playing this social game I used to play while in school back in like middle school when I was around 15 or 16 years old but one day I was at home playing and 3 times I flirted with these girls. First one was apparently some native American girl which went nowhere fast another was a girl from Canada which went on the longest I actually thought I would somehow meet her and then finally after that one ended this other girl who actually called my house and we talked for like a minute, guess she was nervous or scared or something. But that was a long time ago when I was stupid and didn't think things through.
One thing I want to know is how some people meet someone on WoW and actually get married and stay married for 5+ years. I mean how lucky are you?
Edit: the game was called Dinky Bomb on Weplayhere.com. It was actually a really fun game but I guess they took it down for some reason so you can't play it anymore. Here's a link telling about it http://www.spikything.com/dinkybomb/