DaStarBuG - 3:38 pm on Mar 30, 2011 (gmt 0)
Image and Text Ads enabled on both ad units and both rectangles medium and large are capable of serving image ads. I only ran the test for 4 days because I had to disable my wallpaper campaigns for this test which meant I was losing money during the test. I hoped that the effect would compensate this but it was marginal at best.
The test was run with around 40k AIs per ad unit and around 1500 clicks. It is not much but the numbers are very consistent when compared to the same time frames the weeks before.