Ask HN: Collaborative Tool to Compile Feedback?

We receive feedback from a multitude of sources: Uservoice, email, instant message, phone/Skype calls with customers, face-to-face meetings with customers, random late-night chats with friends, etc. We are struggling to find a good way to compile and organize all of the feedback so that we can easily reference it in a product meeting.

We have tried putting them all in a shared Google Doc and even creating a "User Request" Component in Unfuddle (our Bug Tracker) - does anyone have a better suggestion - how does everyone else keep track of feedback, esp. for an early product that's still undergoing frequent major changes?

Thanks!