U.S. Search Engine Rankings, September 2007

Of the five major or "core" search engines, Google held a substantial lead over its rivals in September 2007, according to comScore research.
Of the 9.4 billon searches performed at the five major engines, Google maintained a 57 percent share over competing search engines Yahoo (23.7 percent); Microsoft (10.3 percent); Ask (4.7 percent); and Time Warner including AOL (4.5 percent).