The iPad isn’t just the most popular tablet in the world right now, it’s also the most popular way to do your early holiday shopping on a mobile device as well. AllThingsD reports that new data released from IBM (IBM) shows that Apple’s (AAPL) iPad accounted for “nearly 10 percent of online shopping” traffic over the weekend, generating “more traffic than any other tablet or smartphone” among online shoppers. The iPhone came in second place with 8.7% of all online shopping traffic, followed by Android-based devices, which accounted for just 5.5% of all online shopping traffic.