Google Testing on "Add To Circles” Button in the Search Results

As you can  see in the image above, Google has new things in the search results. Google is testing on integration of the "Add To Circles” Button in the search results.
Way Back we had seen the introduction of the Author in the search results in addition to that now, Google allow the user to add Author to their Google plus Circles. Google is finding all the ways to boost it Social network by integrating it one or other way with it all of the services.

Source and image credits : Tech crunch