Google Moderator for End User Ideas
It’s generally perceived wisdom that you should start your app or service small with core essential features and build it up based on user feedback. End users are often much more insightful than those people developing the project.
If you are looking for a free tool to solicit end user feedback than you might like to look at Google Moderator. It helps projects easily allow end users to submit new feature requests and vote on them.
If you would like a more private, ‘limited by common domain name’ system then you might like to try Town Hall.
