Google has launched AdSense for Mobile Search. This enables mobile website developers to place a Google search box on their sites. The search box can be co-branded with a site's brand and logo. They can generate revenue through the text link ads included in the search results.
The program is available in a private beta-test only. If you're interested in becoming a beta-tester, click here to apply.
Google launched Adsense for mobile content in September of 2007. Last December, Google began offering mobile AdWords offerings for the iPhone and G1.