Bing saw the number of U.S. searches on its site increase 5 percent in January from December to 9.37 percent of the search market, according to a new report from Hitwise. Ask also had a 4 percent increase in the number of searches from December to account for 2.64 percent of the search market. Google still dominated with 71.49 percent of the search market but saw a month-over-month decline of 1 percent. Yahoo landed in the second position with 14.