Qu Li, the head of Microsoft Corp. online division, speaks at the Web 2.0 conference in San Francisco, Wednesday, Oct. 21, 2009. In a deal announced at the conference Wednesday, Microsoft Corp.'s search engine, Bing, will become a new way to find out what people are saying in their Twitter messages _ also known as "tweets." AP Photo logo AP Photo 28 months ago

Qu Li, the head of Microsoft Corp. online division, speaks at the Web 2.0 conference in San Francisco, Wednesday, Oct. 21, 2009. In a deal announced at the conference Wednesday, Microsoft Corp.'s search engine, Bing, will become a new way to find out what people are saying in their Twitter messages _ also known as "tweets."

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