According to AdMob’s March 2010 Mobile Metrics Report (PDF Link), the iPhone 3GS and second-generation iPod touch combine to generate more than 60% of worldwide iPhone OS traffic on the AdMob network. The iPhone 3GS is the most popular iPhone OS device worldwide, representing 39% of iPhone OS traffic, followed by the second-generation iPod touch with 25%, the iPhone 3G with 20%, and the third-generation iPod touch with 12%. Notably, the first-generation…
