I just popped into AdSense, as I do as obsessively as anyone online, and something new popped up:
Add the +1 button to your pages
Adding the +1 button to your pages allows users to recommend your content to friends and contacts on Google search. As a result, you could get more and better qualified traffic.
How exciting! It has all begun today! I clicked on “Get the code snippet” and here’s what I saw: