At moderator.appspot.com quietly appeared in a new tool / service from Google - Moderator. Google's following the old tradition, and he is in beta, although quite decent work.
It is a variation of forums for discussion, like Usenet, with the proviso that it can be to vote on certain proposals. New topics are called "series", and within them can be opened series of issues in which the participants give answers and vote.
It is a rather specialized tool that was developed for internal Google needs to be in one place collection issues that most people would like to ask during the presentation. You can try it here.
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