very interesting site:
Power Users Split the cost of open source software features, documentation, or artwork with other people. Promote your group fund as a bounty if you wish.
DevelopersSell your programming skills to a group before writing code. You may also respond to software bounties.
ArtistsSell your icon and user interface skills to open source developers and power users. You may also respond to artwork bounties.
Technical WritersSell your ability to write clear documentation to open source developers and power users. You may also respond to documentation