Credit:
This can all be done through the AdWords interface. Google notes that “Unlike standard mobile ads, you don't need to format your ads for mobile phones to show your ads on the G1 and iPhone. Because the G1 and iPhone have full Internet browsers, you'll be able to display your standard AdWords ads and landing pages on these devices without having to modify them.”
Credit:
It was only a matter of time before Google extended AdWords to these devices, where a number of startups are already seeing success. For example, AdMob is serving 4.5 billion impressions each month on mobile devices (as of October), and recently raised $15 million from Sequoia and others.