American Ad Server Market Share for January 2008

Here is the list of the market share claimed by the companies for US Ad server space in terms of unique monthly users. DoubleClick acquisition indeed was a big boost to Google’s numbers:

Google – 35.3%
DoubleClick – 34.39%
Yahoo – 11.54%
MSN – 9.86%
AOL – 4.98%
Adbrite – 2.34%