Unlike Microsoft's , Google's Social Search uses your own lists of contacts from various services to build up a network, then features content specifically from the people whom you know. And, while it does include Twitter, it also includes FriendFeed, shared Google Reader stories, and other social content from around the Web.
Getting to Google Social Search
Google Social Search is currently considered part of Google Labs, so it's not enabled by default. To try it out, just visit Google's and click the button to "join the experiment."
(Note: Google Social Search is launching on Monday, so it may or may not be available to all users immediately. If you don't see the option on that page, try back again in a few hours.)
Once you've joined, you'll immediately start seeing social information at the bottom of your search result pages. You can also click on the "Show Options" text at the top left of the page -- or click on the "Results from people in your social circle" link at the bottom of the page -- to filter the results and see only the social information.
Using Google Social Search
To test the Social Search system, I tried searching for the term "Apple." Google's first social result was a satirical story -- "" -- pulled from my Google Reader RSS subscriptions.
Below that were links to blogs a couple of my colleagues had posted regarding Apple; Google cross-referenced them from e-mail addresses in my Gmail contacts list and uncovered their stories. There was even an Apple-related tweet sent by one of my Twitter friends -- PC World's -- grouped together with an Apple tip he had posted on his personal site and an option to see more of his related content.
Understanding Google Social Search
So where's Google getting all this information? The answer, not surprisingly, is through Google. The main venue for culling your social content is your . It's an about yourself that allows you to add links to your various online profiles: your Twitter stream, personal blog, FriendFeed page, you name it.
You have to decide to create a Google Profile and manually add these details in for Google to be able to build your "social graph." Doing so, , also authorizes Google to associate that info with your name within other users' social searches.
"Once you've created a Google Profile and added links to your various online social services, you've signaled a very clear choice that you're comfortable with the world knowing that information, including that you're a part of the other social networks you listed," Cutts explains. "Based on this opt-in decision, Google can start building a broader social graph."
In addition to your Google Profile connections, Google Social Search uses data shared by your Google Chat buddies and within your Google Reader account to build its results. It'll also branch out further, pulling publicly shared social data from friends of friends -- say, someone whom your Twitter buddy is following but you aren't -- then including that data within your Social Search results.
All of the indexed content is publicly shared, and you always have the option of removing any services from your own Google Profile.
More About Google Social Search
Want more info on Google Social Search? Below are a couple of videos that might be helpful. You can also check out the official , now live on the Google support site.
• Video #1:
Google's Maureen Heymans discusses some of the ways you can control your information and understand all of your social connections.
• Video #2:
Google's Matt Cutts goes into greater detail about the mechanics of Google Social Search and how it operates.
When not searching his social circle, writes geek humor at . You can keep up with him on Twitter: .