Go do a search at Google.com and scroll down to the bottom of the list. There will be a link to a site you have visited and it say's "BETA" next to it. Crazy
Looking now I don't see it for every term just major ones. It say's this: "Results for people in your social circle"
YEs, I once saw my friend's blog post with his photo in search results. It is called "Results for people in your social circle" @wwe_fan9417: for that to appear in your results, there must exist such a result (some of your friends must be bloggers )