ComScore published details on top search eingines in December 2007.
| Search engine | Nov 2007 | Dec 2007 | Growth, YTY |
| Total Core Search | 10,030 | 9,636 | -3.9% |
| Google Sites | 5,882 | 5,629 | -4.3% |
| Yahoo! Sites | 2,249 | 2,211 | -1.7% |
| Microsoft Sites | 984 | 940 | -4.5% |
| Time Warner Network | 453 | 442 | -2.6% |
| Ask Network | 463 | 415 | -10.3% |