Site Visitors may soon be able to submit feedback to Google Adsense about the quality of ads without actually leaving your website.

Google Adsense is testing a new "Open Link in New Window" feature that adds a tiny icon opposite the "Ads by Google" link - when clicked, it open the Services Feedback page.

I saw them a couple of 728x90 ads ( Leaderboard Format) ( full sized screenshots - 1, 2):