I don’t know when this update has taken place, but I just noticed it on one of my sites. If you take a look at the Google Adsense code on the right of the page on Getmo Games, you’ll notice next to the “Ads by Google” line, there are now two little arrow buttons.
If you click them, you’re served a new set of ads. This is a very interesting idea. This will probably increase the click-through rates once users know it’s there. If they don’t see something they like, they can check out different ads. Great idea.