Doesn't work for me. Maybe becasue my site is very graphical. The first time i tried this was 2 years ago. And after this post i tried it agian. WITH THE SAME RESULT. I get the same amount of clicks, but 30 percent go to the image and only pay 3 cent. normally i get betwen 20 and 30 cent.
The trick or idea is good, I think. Though it's against TOS. Using the ads with images I agree with "lycos". The title "Recently Popular Tutorials" above the ads goes against TOS, that should be "Sponsored Ads". It needs a little change to stay safe.