Comscore has released its monthly analysis (for the month of October 2009) on the U.S. web search.
Google search engine is always far more used by 65.4% (+0.5% compared to September), followed by Yahoo! With 18% (-0.8% compared to September), Bing with 9.9% (+0.5 %), Ask with 3.9% (unchanged from September), AOL with 2.9% (-0.1%).
In October 2009 the United States alone were performed to 14.309 billion web searches, up 3% compared to 13.836 billion searches conducted in September. Of these, 14.309 billion 9.362 billion searches are done through Google sites (+4% compared to 8.975 billion searches in September), 2.571 billion through the sites of Yahoo! (-1%, 2.6 trillion in September), 1412 billion through the sites of Microsoft (+8%, 1.305 billion in September), 412 million through the sites of AOL (-1%, 416 million in September).