This is the dawn of the smartphone age. But you wouldn’t know it by looking at mobile advertising spend. Last week in this space, Derek Thompson showed that consumers are spending 10% of their media attention on their mobile devices while the medium only commands a mere 1% of total ad-spend. Comparatively, the quickly “dying” print medium attracts only about 7% of media-time, but still captures an astonishing 25% of the total U.S. ad-spend, with print receiving 25-times more ad money than mobile. The disparity between the two mediums gives a strong indication as to how much room mobile still has to grow.