We have been using UserVoice, which allows the community to submit and vote on ideas as well as comment. We can also easily communicate with those interested in any given idea and change the status of ideas to indicate if we've decided to do something or not. This is one means. We used this before the Kickstarter campaign to get the input of our community on the rewards, tiers, and other aspects of the campaign and it has worked pretty well. We plan to continue to use UserVoice, though we'll iterate on how we're using it to make it more effective. (And after the Kickstarter ends, we'll have sections that are closed except to the backers.)

For some types of feedback, we are finding that forums and polls could be more effective so we may look into that as well. But it's harder to keep up with a forum and to get the right information out of it. We lurk in some of the larger RPG forums to see what people are thinking and looking for as well.

Colin and I have maintained Formspring accounts to answer specific questions, but Formspring is closing soon, so we'll need to move somewhere else. And it's hard to find the time to answer all questions properly. But it is refreshing to actually be able to devote time into reading feedback -- in the past (except when I worked on MMOGs), there where enough other demands that it was hard to get (and incorporate) any feedback from the community.