Social Search

Two initial features which personalize the results are going live over the next few days. First, Bing will be able to highlight search results that have been "liked" by your friends. For example, if you search for a Japanese restaurant in Paris, you'll get the regular Bing results, but if your Facebook friends have said they "like" a specific restaurant in the city, that will be listed, too. Bing also uses Facebook data to improve the results for name queries, so that a Facebook friend is more likely to turn up in the results than a random person with the same name.

Responding to privacy concerns, both Microsoft and Facebook emphasized that Bing will only show "likes" that Facebook users have chosen to share publicly. Bing, meanwhile, won't share any of your search information with Facebook and will give searchers an opportunity to opt-out.

As for why Facebook is working with the Microsoft's search engine on this integration, Mark Zuckerberg said it's because Bing is in a better position to innovate. Please find more details on the Bing and Facebook blogs. For more background information about Facebook's strategy, watch Mark in an on-stage interview with David Kirkpatrick below.