Google is launching AdSense for Mobile, which will allow marketers to place contextual ads on sites viewed via mobile devices. The company has been running mobile ads through its auction-based AdWords program since mid-2006. Now it will be automatically converting AdWords ads to text ads that will appear when someone accesses a participating Web site on a mobile device. The Web sites must be optimized for mobile browsers first.
Basically, the system reviews the content on the site and delivers text ads that are relevant; the publisher earns money every time an ad is clicked on. AdSense for Mobile will be available in the U.S., England, France, Italy, Germany, Spain, Ireland, Russia, The Netherlands, Australia, India, China and Japan.