We've recently started microPledge, which is designed to fit just this scenario. It's new, but we think (we're biased :-) that it's better than RentACoder and the likes, and we encourage "on-shore" content. The idea is to start a project, open source or otherwise, get pledges ... and developers can quote to develop it. Feel free to check out the Springwise write-up about us, or our website, micropledge.com. -Ben