According to a U.S. desktop search report by comScore back in May, there has been practically zero change in search market share for Google, Microsoft, Yahoo, Ask and AOL between the months of April and May.
64 percent of the market share was owned by Google, and Bing was still holding steady at the 20 percent share it reached in March. It looks like the only change that has occurred was a mere .1 percent loss by Google, which was picked up by Bing and AOL.
The information coming out of ComScore says that 18.2 billions search queries in total were performed in May, and over half of them where conducted in May, at 11.7 billion. Bing managed to get 3.7 billion searches, and Yahoo got 2.3 billion.