Google AdSense display ads will now feature the +1 button

AdSense +1 button - In the next month, we'll introduce the +1 button and personal recommendations to display ads. The +1 button will begin to appear on AdSense for Content and AdSense for Mobile Content display ad formats -- image, animated gif, and Flash. +1s will be one additional signal to help determine an ad's relevance and we'll continue to show the ads that will generate the most revenue