Yesterday, comScore released its statistical information from December 2011 regarding market share of search engines in the United States. For the first time since launching in 2009, Microsoft's Bing surpassed Yahoo to become the second most popular search engine in the country. Google remained in first place with a very commanding 65.9% market share in December. 

According to comScore's data, Bing handled 2.75 billion search queries last month (accounting for 15.1% of total searches), while Yahoo recorded 2.65 billion. Rounding out the top five were Ask and AOL Search, respectively. Google remained the leader by handling about 12 billion search requests in the month.