We know smartphone and tablet owners like to buy games. But if you go by a new ABI exploration of user habits, most of us aren't buying much of anything. More than 70 percent of the crowd spends little to nothing on mobile apps, dragging down the average of $14 spent per month among paying customers to a median of $7.50 when you include the skinflints. As you might imagine, that leaves the remaining 30 percent making up for a lot of slack: three percent of downloaders represent a fifth of all the spending in the mobile app world. Researchers suggest that
