comScore: Bing Takes No. 2 Spot From Yahoo in December 2011

By John Rampton at SearchEngineWatch: 
Bing is finally the No. 2 search engine in the U.S., according to the latest figures from comScore. Bing which launched in June 2009 with an 8.4 percent search engine market share, now accounts for 15.1 percent of searches.
As Yahoo dropped to third, Google continued to lead all search engines in December with 65.9 percent market share.
The search engine rankings for December 2011, according to comScore, were:

• Google rose to 65.9 percent (up from 65.4 percent in November). 
• Bing rose to 15.1 percent (up from 15 percent in November). 
• Yahoo dropped to 14.5 percent (down from 15.1 percent). 
• Ask remained at 2.9 percent. 
• AOL remained at 1.6 percent

More than 18.2 billion explicit core searches were conducted in December. This is up 2 percent from November. Google lead the way with 12 billion of the total searches; Bing ended up with 2.7 billion, followed close by Yahoo with 2.6 billion. Ask Network with 531 million searches, followed by AOL with 287 million.
In December, 68.1 percent of searches carried organic search results from Google, while Bing powered around 26.5 percent of searches.