The surge was fueled by strong fourth-quarter spending, up 35.5% year over year, with December paid-search expenditures growing 44.8% compared with the year-earlier period.
Google expanded its paid-search lead over other search engine rivals in the fourth quarter, capturing 82.6% of U.S. advertising spending, up from 80.2% in the third quarter. Yahoo and Bing, which combined their paid search offerings last year, garnered 17.4% of the total market, down a full percentage point.
Google also dominates worldwide. A report released by business intelligence company IHS Screen Digest found that Google commands 83% of the global search-spending market, an estimated $25.4 billion, up 20.2% from 2009.