Google (60% search share) and Yahoo! (18.1% search share) were the number one- and number two-ranked online search providers in the U.S. for August, according to Nielsen Online.
AT&T Worldnet Search (+203.8%) and Comcast Search (+30.9%) showed the largest year-over-year growth for the time period.

Provider
Searches
(in 000’s)
Year-Over-Year
Growth
Share
of Searches

All Search Providers
7,222,826
-7.7%
100.0%

Google Search
4,331,153
3.1%
60.0%

Yahoo! Search
1,304,889
-16.5%
18.1%

MSN/Windows Live Search
770,592
-23.8%
10.7%

AOL Search
376,331
-13.5%
5.2%

Ask.com Search
143,231
4.7%
2.0%

Comcast Search
45,438
30.9%
0.6%

My Web Search
38,550
-46.3%
0.5%

AT&T Worldnet Search
30,272
203.8%
0.4%

NexTag Search
17,901
-20.6%
0.2%

Dogpile.com Search
15,418
-27.8%
0.2%

Source: The Nielsen Company (August 1, 2008 - August 31, 2008)