- Rapid growth: Worldwide requests from Android devices increased 97% from October to December. AdMob received over 1 billion ad requests from Android devices in Dec 09.
- Increased manufacturer diversity: In October, 98% of requests came from HTC devices. In December, 56% of requests were from HTC devices, 39% from Motorola devices, and 5% from Samsung.
- Increased device diversity: In December, 7 devices generated more than 3% of requests each: the Motorola Droid, HTC Dream, HTC Magic, HTC Hero, Motorola CLIQ, HTC Droid Eris, and the Samsung Moment. This is up from only 3 devices in October (HTC Dream, HTC Magic, and HTC Hero).
- Droid Invasion: The Motorola Droid is already the leading Android handset in the AdMob network and generated 30% of requests in December.
- US leads Android adoption: 90% of Android traffic was in the US in December, up from 84% in October. Top countries by requests are the US, UK, Germany, France, and Canada, respectively.

From: http://metrics.admob.com/2010/01/metrics-update-android/