Apple now dominates the mobile web in the U.S. with a 48% market share. This growth, interestingly enough, does not just come from the iPhone, but the iPod touch also saw a meteoric rise in usage during the last month. Traffic from the iPod touch to AdMob's network in the U.S. increased 3.4 times from November to December.
Overall, requests from the iPod touch increased from 18 million in July 2008 to 292 million in December. While traffic from the iPod touch grew at a steady clip over the last few month, a good part of this growth came, not unsurprisingly, in the week after Christmas. After the iPhone (10%), the iPod touch (4.7% ) is now the second most popular mobile device on sites that run AdMob's advertising. Overall, iPhone requests grew 86% since November.
Read more at AdMob