I’ve been meaning to post about this for a very long time and just got around to it today. See the adsense ad (image) I pasted to the left as an example? See the little up and down arrows? Have you seen any of those on any of your sites? I think it’s something that adsense is test marketing because I see them randomly about 10% of the time.
If you catch them on a site, check them out. If you click up or down, it just dynamically shows you new ads (without reloading the page). As publisher I kinda think that’s pretty cool, since if someone bothers to check out more than one series of ads they are more likely to find one they like (and click it) – therefore increasing my chances to make money. However, many people are “ad blind” anyway, so how much will this really help?