Google's flagship search site accounted for just over half of all online searches in the U.S 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 percent year-on-year.

Yahoo placed second with 24 percent of all searches, but also enjoyed strong, 23 percent year-on-year growth. Microsoft’s revamped Windows Live trailed in third with 10 percent market share and just under 600 million searches.

AOL's search suffered the biggest dip in growth. Although AOL Search finished fourth with over 328 million queries, its traffic fell 18.2 percent compared to the same month in 2005.

The full table reads:

1. Google Search - 3,003,205 (50.2 percent share)
2. Yahoo! Search - 1,434,169 (24.0)
3. MSN/Windows Live Search - 595,584 (10.0)
4. AOL Search - 328,559 (5.5)
5. Ask.com Search - 136,919 (2.3)
6. My Way Search - 135,706 (2.3)
7. iWon Search - 30,827 (0.5)
8. EarthLink Search - 24,324 (0.4)
9. Dogpile.com Search – 23,033 (0.4)
10. SBC Yellow Pages Search - 22,929 (0.4)

*Source: Nielsen//NetRatings MegaView Search, September 2006.