When the publishers at Net Library and Peanut Press were inundated by download requests, they realized that they were witnessing a seminal change in the literary world. But they were not exactly sure just what that change was. They turned to FollowUp.Net's ProfileTrakker application to identify these new buyers and understand their reading and buying habits. Perhaps the only thing more surprising than the outcome of "Riding the Bullet" was the results of the e-customer profiles that FollowUp.Net uncovered.