I clicked on an advertisement from the Daily WTF (I normally don't click on advertisements, and clicked on two of them from there, good ads!) and came upon the following site:
Cambrian House
The idea is that everyone can contribute on as much or as little of an open source (paid) project as they'd like. The original concept, approving/disproving of the concept, and code. Code is also downloadable once the project is done since it is open source (supposedly) but there are licenses and such for legal reasons.
At the very least it seems like an interesting website.