Google's flagship search site accounted for just over half (50.2 per cent) of all online searches in the US in August, according to a survey by Nielsen/Netratings.

The search giant played host to just over 3 billion searches during the month, and its search traffic grew 30 per cent year on year. Yahoo placed second with 24 per cent of all searches, but also enjoyed strong, 23 per cent year-on-year growth. Microsoft's revamped Windows Live trailed in third with 10 per cent market share and just under 600 million searches.

AOL's search suffered the biggest dip in growth, finishing fourth with over 328 million queries, though its traffic fell 18.2 per cent compared to the same month in 2005.