I reported at the SEW blog back in June that Google Asks If AdWords Is Useful With Feedback Buttons. Philipp discovered the little quiz and posted this image of it, so we can all see it.
This is the first time I have seen discussion reporting this feature in a forum. A WebmasterWorld thread has documented case of how this user feedback small form is generated (for some).
I don't know if any of you have seen this but I was just searching google and clicked an adwords ad and I pushed back to get to the listings and a little line of text below the url of the ad I clicked said "Was this link useful? Yes or No" Just thought this was interesting and wanted to pass it along.
So this individual clicked on an ad, then was taken to a landing page and clicked the back button. At that time, the user was given a small quiz. Interesting if this quiz would relate back to any new Quality Score.
Forum discussion at WebmasterWorld.