Fun idea. A dating site targeted specifically to gamers.
I just heard about it over the weekend so haven't checked it out yet, but anecdotally I've heard that it has thousands of members. On the downside, most of them appear to be on the West and East Coast, and not too many where I'm located in the Midwest yet.
Registration is free. Contacting someone has a cost (I think it's $19/90 days).
It might be worth it though to have a more focused search. I find that in my own quest for compatible dates, I tend to gravitate towards gamers, or at least geeks. :)