Mobile advertiser AdMob is reporting explosive growth for the iPod touch in its December report, with an unusual demand after Christmas. The Touch is said to have become the #2 device in the AdMob Network, achieving a 4.7 percent share. The US lead the way with 70 percent of purchase requests, though Canada, the UK, Mexico, Germany and France are all said to have shown strong growth.

The combination of the Touch and the iPhone were 15.5 percent of the entire mobile market in December. The iPhone OS gained 6 percent on OS share in December, rising to 32 percent, and was strongest in North and Latin America. The numbers are said to not accurately reflect the Touch's growth, though, due to its classification as a non-smartphone.

Smartphone share increased in the mobile market as a whole, moving up 11 percent to hold 33 percent. Symbian's OS ranked first with a 41 percent global share, reaching over 90 percent in Asia and Africa. RIM and Windows Mobile were well behind the iPhone at 10 and 9 percent, with Palm a distant 4 percent, having suffered a 5 percent decline.