Qi Lu, 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 1 month ago

Qi Lu, 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."