This morning, Google added yet another Google+ in your face feature to the Google search results.
Search for a topic, such as [seo], [running], [apple], [social media] and so on, Google will show "people related to" that topic on the right hand side of the page but only if they are on Google+ I believe.
Give it a try yourself for any topic you think would match.
This is an extension of the knowledge graph to generated more queries and maybe a more useful search experience around social profiles.
Google has not yet announced this but with the push of actively discussed and share on Google+ in the search results, this doesn't surprise me.
