Google accounted for 66.44% of all US searches in the four weeks ended February 23, while Ask.com increased its share of searches 18% year over year – from 3.52% of searches in February 2007 to 4.16% in February 2008, according to Hitwise. Yahoo Search and MSN Search received 20.59% and 6.95% of US searches, respectively, in February 2008.