I've been following FiveYearItch for a while. I like the features that show up there, but this one is a doozy. I don't think it exists anywhere else, though to be sure there are some vaguely similar services.
I've always got my best gigs through other developers, including ones I didn't know before.
Your fellow hackers will always spare a few minutes to talk. Good seeing this go up as a service.
Social recruiting always snags good candidates. This is a natural extension. Let's cut recruiters out of the loop!
Spam could be an issue. But they say they screen contacts, so it looks like it could work.