fwiw, perfectlygoodideas.com is available right now. perhaps someone could use the uclassify api to classify & cluster similar ideas & recommend partnerships. no idea how well it would work, but it might be worth a an hour or two on a weekend to find out. im just thinking out loud here :)
ive pared down my list of "want to dos" to a single choice, but i definitely want to use uclassify. if i hadn't buckled down, i'd have a half-working django prototype in ~/src/ right now that i'd revisit to burn some time on every 3 months.
There's something already out there similar to this, at ShouldExist.org (currently down for redesign.) Might be some duplication of effort, or an opportunity to strike while the iron is hot -- depending on your point of view.