So you are providing a service like Odesk. There certainly is a huge need for this right now. Just come out and say it. Put a blurb on the site, something like:

"Hackerlist allows you to hire a skilled worker without the need to interview them one by one. Join, define a task, price it, and get results from great engineers. Hackerlist works with a pool of some of the best technical talent to deliver what you need. No resources wasted on poor results. Streamline your work process by taking care of finding the niche talent you need to get things done"