make a UserVoice page to manage project ideas
https://arc90.kindlingapp.com/ and http://getsatisfaction.com but they are not free..
5
votes
AdminSteven Lehrburger
(Admin, Web Ideas)
shared this idea
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http://ideacv.com/ could also work, but I think the CV/resume theme kills some aspects of colalboration and spur-of-the-momentness that are important