A site about ideas, where people share business ideas and discuss them. It would allow you to find other people interested in their development. It would also you to see if your idea has already been implemented (if it were like a database of existing business ideas), and it would show you the progress of the idea's implementation, who's building it, etc.

Didn't end up building this since it would be hard to make money off of it (as far as i can tell)...and i already have other projects on my spare time ><. I still think the concept is cool