Direct Link to Google Moderator! 

In the spirit of using Google tools, we'll use this for back channel questions and discussion.  You can respond to each other's posts.  Teachers use this a lot to learn what topics students want to cover for a test or what questions they have about a particular unit, etc.  The 'voting' feature allows participants to essentially 'like' questions they have in common.  You can use this to allow groups vote on decisions that involve many choices where the participants are also 'adding the choices.'  Try it yourself!  google.com/moderator