Google disclosed plans to make its social search available to global users in 19 languages over the next week, and more languages later.

Despite its reign at the top of search engines, Google finds itself a step behind in social search, compared to the tight partnership of Facebook and Microsoft.

Social search results in any language will be mixed throughout the search results, and they can rank anywhere based on the relevance, with an annotation of the sharer at the bottom. The users can find posts and links created by their friends, from public networks like Twitter.  

Users who want ot access Google's Social Search have to be logged into their Google account, and further link the account to the social media services. Google then can suggest connections to the users' friends by crawling their Gmail contacts. 

Google plans to introduce its +1 button and data to the foreign users as soon as possible. +1 is designed to let Google search users recommend results and share feedback with others, just like Like button on Facebook.

Yohann Coppel, a Google software engineer, wrote on Google's officla blog Inside Search, In 2009 we first introduced Social Search on google.com as an experimental feature designed to help you find more relevant information from your friends and the people you care about. Since then we've been making steady improvements to connect you with more people and more relevant web results. Today, we're bringing Social Search to more users around the globe.

Google's Social Search expansion comes on the heels of stronger integration between Microsoft Bing and Facebook, and the controversy over Facebook having admitted hiring a PR company to spread smear stories about Google's use of people's private information for service improvement.