Social Search today rolled out globally in 19 languages. "People around the world will find similar types of social results as people in the US, and we plan to introduce the +1 feature as soon as we can. With these changes, we want to help you find the most relevant information from the people who matter to you," Google stated.
"Social Search help you find pages your friends have created, or help you find links your contacts have shared on Twitter and other sites. If someone you're connected to has publicly shared a link, we may show that link in your results with a clear annotation. The results only visible when you're signed in your Google Account. That way Google makes a best guess about whose public content you may want to see in your results, including people from your Google Chat buddy list, your Google Contacts, the people you're following in Google Reader and Buzz, and the networks you've linked from your Google profile or Google Account. For public networks like Twitter, Google finds your friends and sees who they're publicly connected to as well. You can see a complete list of the people included in your social search results in your personal Google Dashboard (this display is private)," Google explains.
"Just like on google.com, social search results in other languages and on other domains are mixed throughout the Google results page based on their relevance."
Check out the explanatory video:
[Source: Inside Search]