Clean design, I like it. I haven't used the service at all but I like the idea a lot and it certainly has potential. You could also do some interesting things with matchmaking based on the analysis of users' twitter streams. I've been flirting with a "Dating Genome" matchmaking application idea for a while, idea being, it would use data points from Twitter, Facebook, etc... to compile a group of users most likely to match your "genome".

Good job!