The total number of online searches in August 2005 topped 5 bln, with the leading three Web portals accounting for 80% of them, Nielsen//NetRatings said. Google was #1 with 45.9% of all searches, followed by Yahoo with 23.2%; and MSN with 11%. MSN lost market share from July 2005, when it had 12.2%. Google and Yahoo gained 1.2% and 1.4%, respectively. The average Web searcher conducted nearly 42 searches, a 7% increase from the previous month.