netmeg - 2:44 pm on Mar 24, 2011 (gmt 0)
Sure there is, depending on your platform. For example, for WordPress, I use a plugin called WP-Touch that has AdSense & AdMob delivery built into it.
AdSense has mobile advertising, you just have to be able to use browser detection to serve the right ads to the right devices.
Interestingly, while the ads don't show on my BlackBerry, they show up fine on my iPad and also on my iPod Touches. Don't have an iPhone, so can't check there, but it's odd they'd show up on the iPod Touch (both the original and the second one) and not the iPhone.