In mid-January Google launched a new integrated search features called “Search Plus Your World.” When you do a Google search now, in addition to displaying regular search results, this new feature also searches your Google+ account to look for posts, names, etc. of people in your Circles on Google+ and displays those results with your regular results. Below is an example of a Search Plus Your World search result that displays regular results and social results from Google+ (click to enlarge).
To read more about Search Plus Your World, visit Google’s page on this service.