Americans conducted 6.6 bln searches online in September 2006, up 2% versus August 2006. Annual growth rates in search query volume remained strong with a 31% increase since September 2005. 879 mln toolbar searches were conducted in September 2006, accounting for 13% of the total US search market.
| Search engine shares in September 2006 | ||||
| Engine | July 2006 | Aug 2006 | Sep 2006 | Growth |
| Google. | 43.7 | 44.1 | 45.1 | 1.0 |
| Yahoo! | 28.8 | 28.7 | 28.1 | -0.6 |
| Microsoft | 12.8 | 12.5 | 11.9 | -0.6 |
| Ask | 5.4 | 5.5 | 5.8 | 0.3 |
| Time Warner | 5.9 | 5.6 | ||
| Source: comScore | ||||