Google has just launched Google AdSense version for mobiles, not for the phones but for website owners in order to push the web community to develop a mobile version of their websites.

Dilip Venkatachari, product management director for AdSense, said the ads would provide a new source of revenue for publishers and could encourage more online sites to create mobile-focused Web sites.

If you want to check how your website looks on a mobile phone browzer, please go to this Google Mobile Browser Tool http://www.google.com/gwt/n

Google AdSense team try to test some additional words and phrases next to their Google AdSense Ads.
Before it used to be Ads by Google
After (today) it has Show More