EditorialGuy - 1:11 am on Oct 1, 2013 (gmt 0)
For example, I actually saw (on one occasion on a single day) a small image in one of my text ads (perhaps an 80x80 button size). At the time, I thought it was a new enhance feature like favicons but it went away and I haven't seen it since.
We had a discussion of that here back in July or August, as I recall. I saw the ad units with icons a few times--maybe they were being tested? I thought they looked better than the usual AdSense text ads, though not as good as the new text ads that we've been seeing lately.