Google has really struggled to develop a social media presence. However, Google has really up'd the anti with social search feature.
Now, not only are websites that have been 'shared on Twitter' by colleagues, acquaintences, and Google connections highlighted on Google search, but now websites visited too.
This new search feature advances 'Google search' towards its own 'recommended' social search engine. Combined with the power of Twitter search, real time search and now recommended search, Google is dominating the search engine landscape, even though Bing has Facebook search integration.
A great example of recommended search by Google.
