I found the article that DoubleClick launches mobile ad platform.
According to the article, DoubleClick's media company customers can now sell and manage advertisements online and on mobile phones. The new capability is integrated into DoubleClick's publishing service so that publishers can schedule mobile advertisements in the same way that they currently deliver other online ads. The investing to mobile ads this year should reach around $32.2 million, and it will hit $1.4 billion by 2012.

http://www.itworld.com/Tech/2427/070924dcmobile/