Google's in the news with the release of Social Search, which highlights search results by those in your social circle. Their goal - "to ensure that Google web search is as social as the web itself."
To use it, you need to do the following:
1. Have or create a Google account.
2. Have or create a Google profile. This part is interesting - your profile won't be considered eligible to be featured in Google search results unless you add information either to the "Where I grew up" or "Where I live now" fields. (This may not be the only limitation; I was willing to fill in other fields such as last name and where I went to school so I'm not sure if leaving those blank would have the same effect. But even their cute video shows the "Where I live now" field being filled out.) For those concerned about privacy, this could be a dealbreaker, unless you get creative with the wording.
3. Wait. Perhaps the most critical four words in the video tutorial are "in a few weeks." As much as I wanted to see that "My social circle" link in the results right away (like today!), that indexing is apparently going to take a while.
Looking forward to it when it happens!
Search is Getting More Social - on the Google Blog
Google Takes Aim at Facebook and Twitter: Social Search is Now Live - from Business Insider