I would recommend steering clear of these guys. They spammed me several times, at work, trying to get me to join their site. Although the founder professes they "are not your typical recruiter sending unsolicited emails".
On the surface it sounds like a good idea, but it is nothing more than lipstick on a pig, plain old recruiters. You're better off using multiple recruiters, who will expose you to many companies and get you the best possible price.