Matt Cutts, Google's head of spam detection and correction is calling for questions which he will answer in upcoming videos:
"Questions should be submitted to the Google Moderator page," Matt noted.
"I won't be able to answer every single question, but I'll tackle several popular ones plus a few of the more interesting questions. Please submit questions that lots of people would be interested in, not just a question about your specific site," he stated.
As of writing, 667 people have submitted 352 questions and cast 7,577 votes.