Stumbled upon http://uservoice.com today. Great idea. As a client you get a page with posts which contain ideas on how to improve your web-site or any other product which are sorted by votes. Each new user gets 7 votes which he/she can use to bump existing ideas and can replenish his/her votes by adding ideas of their own which other people vote for. Great idea generator. You can also show off to the community what ideas you are currently working on and which ones you have already implemented. Really worth taking this web-site into account when pondering how your product can be improved. Probably, wouldn't work for large-scale projects which don't have a dedicated, strong community of users who want to help out.