I would have to say www.Digg.com by far. They're taking advantage of being a premium publisher and the way the ad is interactive makes me wonder if they get more clicks now >.<
I am going to copy the digg ads on one of my sites tonight to improve the click through on the affiliate adverts I have.
Those ads at Digg look nice indeed. Do they just played with CSS or some special code or status is needed from Google?
Check the homepage of mad4mobilephones.com. There are affiliate links right at the top of the page with a grey border. The border used to be red. I will make it look more like digg if the CTR improves after the colour change.
Not yet (not had time to do it properly) but it will do. The CTR has increased today since I altered the colour of the border.........