In June, Google launched +1 button to the sites, making it easier to recommend content across the Internet. In July, underwent a nearly 2 billion impressions a day, and also Google made much faster. Today, +1 button appears in more than a million sites, with overall four billion impressions per day.

Google launching two features for +1 button that make a more useful buttons for users and publishers.

Share With Google + Circles 

Clicking a +1 button is a great way to show the contents to others when they search on Google. But sometimes you want to start a conversation right away at least with some friends. So from yesterday, Google make it easy for Google + users to share Web pages with their circles directly from a +1 button. Just a side as usual and look for new "Share on Google +" option. From there you can comment, select a circle and share.