Gotta say, I wasn't that impressed with their site. I signed up and found that their code transformed my username to all lowercase characters. Why would anyone do such a thing?
I tested the website, and was only mildly impressed. I didn't think the user interface was all that great (and just hated the color scheme).
On the other hand, though, Keyur has been unbelievably receptive and responsive to feedback. And they seem to be putting security, reputation, and trustworthiness at the top of their agenda, with just a few feature advantages.
I would LOVE to see another successful exchange, so I'm keeping an open mind on this one, and wishing them the best of luck!