Interesting platform. For larger projects, I'm less likely to use a eLance/vWorker type service, and more likely to seek people out via their github/twitter/blog directly..

What is the revenue model here? Do you let me search people, and then I pay you a monthly fee, or do you take a cut?

The former is worthwhile to me; By requiring that users pay $50/month to search the devs, it keeps out a lot of the rifraff.

The later doesn't offer enough utility to be worth a cut of the entire price.