comScore: Google’s U.S. search market share up; Yahoo down

Google widened its lead over Yahoo in the U.S. online search market in October, according to the latest data from comScore.

Google’s share was up to 65.6 percent last month from 65.3 percent in September, while Yahoo’s dropped to 15.2 percent from 15.5 percent. Microsoft gained a tenth of a percentage point, making it 14.8 percent share of the U.S. market, Bloomberg reported.

Google, which revenues mostly came from query- result-based advertising, is trying to improve its search engine facing competition from Yahoo and Microsoft after they signed a 10-year partnership. Google announced earlier this month that it is making results “fresher” by adding more recent links on some subjects, which affects about 35 percent of searches.

According to eMarkter, Microsoft and Yahoo together will account for about 16 percent of spending on search-based advertising in U.S. in 2011, while Google is expected to grab about 76 percent.