Have you checked out the new Facebook search page recently? Facebook has added a good number of search options including the abilities to search your connections, people and posts of your friends.
There’s an additional “web search” option that lets you search the web from inside Facebook. This very search engine is being powered by Microsoft’s Bing.com.
Bing.com claims itself to be a decision engine that replaced the old Live search. I don’t know why Facebook went for Bing, may be Microsoft has negotiated to popularize Bing by interacting with the best social networking site on the internet.
Let’s see how far Bing and Facebook goes together.

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I liked it. So much useful material. I read with great interest.
i have been evaluating the search results of Microsoft Bing compared to Google and they are comparable. Bing gives almost the same relevant search results just like Google.
my default search engine is Yahoo but now i am using BING because it is much better than Yahoo. i heard that Bing search engine would power Yahoo search also.
i think that Bing is not as good as Google. Google would still index new websites faster than Bing. Microsoft would still need a lot of catching to do with GoogleBot.