* That's one of the ugliest sites I've seen in a while. The colours are nauseating and hurt my eyes and the fonts are horrible.
* What's in it for me? Other than the non-tangible reward of potentially helping a stranger getting a job, what other incentive is there?
The design needs a lot of improvement, though.
Unfortunately, this is not a problem for a master networker and this is much more valuable to an employer. If I am a master networker, than I continually improve on my ability by doing just that - networking. Having a tool to help me may give me a competitive advantage may indeed help. However, this will ultimately lose out when network effects set in. It will easily be gamed by people.
Just recently I got an e-mail from a friend asking if I know anyone to fill two highly regarded director-level positions. I referred a friend, but I don't think I would ever use a service to do such a transaction. It would relinquish much of the value of the transaction - that its a person I trust referring someone.