Research outfit comScore has released the US search engine rankings for October 2009
. During the month, Americans conducted some 14.3 billion core searches, the majority of which (9.4 billion) were through Google, which held 65.4% of the search market, up from 64.9% in September. Yahoo served some 2.6 billion searches, trailed by Microsoft with 1.4 billion, Ask with 552 million, and AOL with 412 million.
It was a rough month for Google's closest competitor, Yahoo, which accounted for some 18% of the search market share, a 0.8% loss from the month prior. Microsoft sites grew 0.5%, making up 9.9% of the search market -- a noteworthy increase, though Redmond is surely bummed
about not chipping any figures away from Google's presence. Meanwhile, Ask remained flat at 3.9%, and AOL lost 0.1%, settling with 2.9% of the market.