One is for ideas for programs and another for ideas on improving email.
The first one returned some really good results, the second not so great. I think that for this to be effective, you really need to ask the right question, and ask carefully.
I'm going to set up a site for the program ideas where others can post comments and code as well as vote for the ideas. It'll be interesting to see what comes of it.
The ideas for email will probably be used in the book I'm working on about developing with the RCP.
The questions are still open so, if you have an idea, add a comment or go to mturk and earn 9 or 10 cents