Google +1 button is a cool and easy way to recommend something to others and also appreciate it for something that it provides. In case you haven’t noticed, we also have a +1 button to the right (above or below the Facebook box) which you can click to appreciate us and also to let your buddies know about us.
Till now, we were seeing this +1 button on the websites and links on internet but starting this October, Google has planned to show +1 button on the display ads on every website that you visit. If you click on this +1 button on the display ads, the ad will start appearing in your social connections. It would interest you to note that clicking the +1 button don’t count as the click on the ad.
The reason why Google has thought of doing this is that they believe that these recommendations could lead your readers to notice ads on your site more, leading to more clicks and higher returns for you over time. Clicking the +1 button on an ad will also mark it as more relevant and that ad will display on a page which will be the most relevant among the others competing for it.
To help you understand the process better, Google had also cited the following example. Take Susan, who sees an ad for a good deal on flights. She +1’s the ad, thinking her friends might value this deal. Now, when Susan’s friends and contacts are signed in to their Google accounts, they’ll be able to see Susan’s picture across the bottom of the ad, with a note saying she +1’d it.
[via Adsense blog]