[conorgil]

I would love this site if it existed. I also have a list of projects that I would love to work on, but I like working with other people the most so I haven't started many of them. This site would also be a great place to meet new people with similar interests.

It would probably be difficult to go from a joint "proof-of-concept" project to a company unless all parties are on the same page. Like you mention, maybe the site could have optional legal agreements or something. Perhaps you could partner with something like LegalZoom.com to take care of those agreements for the users.