A large group of iPad owners, 32 percent, may not be downloading any apps from the App Store, a Nielsen study suggests. The figure comes from an August poll of 5,000 wireless device owners. Within the iPad contingent, only 63 percent had paid for at least one app. A sliver of people - 5 percent -- were downloading only free apps. As a rule, native iPad apps tend to be more expensive than ones compatible with the iPhone or iPod touch.
