Google launched video ads back in late May, and since then we have very few discussion on the topic. In fact, we had one thread with some initial video ad feedback but not much since.
A new thread at Search Engine Watch Forums named "The Video Void" has continued discussion. There is a lot of skepticism on if these video ads will work or not. AdWordsRep noted that he/she just passed "the URL for this thread on to the Video Ads folks." AdWordsRep continues, "here is your chance to have your opinions/comments/irritations/suggestions regarding Video Ads heard by exactly the right folks."
So take this opportunity and join the discussion on Google AdWords Video ads at Search Engine Watch Forums.
