In an effort to get ahead of the rest of the crowd google quietly rolled out Adwords for your Mobile Phone Searches
"We are currently conducting a pilot to test mobile ads in the US, UK and Germany," said a Google spokesperson. "This is similar to the pilot test we conducted in Japan late last year, and it is open to all advertisers in the US, UK and Germany. We will continue to evaluate the mobile ads pilot and will refine the product based on feedback from our advertisers and users."
If you're looking for more information you can visit the Google Adwords Mobile Help Section.