chatooya writes "Bounty County is a new website that lists programming bounties for free and open source software projects. It was launched this week by the Participatory Culture Foundation, which has some bounties of their own. You can search, browse, or get feeds of new bounties and if your project is offering a bounty, you can list it here."
This is, IIRC, the fourth incaranation of a site like this that I've seen. Maybe this one will work.