stajer - 7:20 pm on May 17, 2011 (gmt 0)

I believe google already launched a version of this several months ago. If you link your twitter/fb/linkedin/etc accounts to your google profile, your search results will highlight those links "liked" or otherwise promoted by your friends in those networks.

From Google Connected Accounts [profiles.google.com ]:

Connecting your accounts puts you in control: When you search, you can see relevant content your friends share on the web. You make it easier for them to find the stuff you share on the web. You can choose which accounts to show by creating a public Google Profile. Remember, Google won’t share your searches or other private information with third-party services without your consent.