Microsoft has been spending loads of cash to prop up Bing and expand its search engine market share.
Microsoft managed to expand Bing’s U.S. search market share marginally in December 2011, which is now 15.1% while Google still leads with around 66% according to research firm ComScore.
Although increasing market share is good news for Bing, its share gain has come at Yahoo expense. Yahoo’s market share dropped 0.6% to 14.5% in December. Google grabbed around 0.5% of Yahoo’s lost market share while Bing grabbed 0.1%.