comScore has released their May 2008 U.S. Search Engine Rankings and no major changes have occurred. Google sites came in first, at 61.8% up .2% from April. Yahoo and Ask also saw .2% gains, and they came at the expense of Microsoft and AOL, which suffered .6% loss and .1% decline respectively.
10.8 billion searches were conducted in May, a 2% increase over April. Google sites saw 6.7 billion of those searches while Yahoo saw 2.2 billion. Microsoft sites saw 920 million searches on their sites. Check out the charts below for a breakdown of the data.

