Google’s +1 button adds sharing ability

The Official Google Blog
Google’s +1 button will soon enable users to share a page directly to their Google+ circles, increasing its ability to drive traffic. Since the button launched in June, it has functioned only within Google Search by highlighting pages you or friends had +1’d. Now it will also function much like the Facebook “Like” button by creating a post in your social network stream. Websites don’t need to do anything special to take advantage of this, but they can modify their page code to specify the headline and description Google+ should use when linking to it.