China Southern Sky Pearl Club members will now earn up to 350 percent class-of-service bonus. The program recently upped the bonus members receive when flying premium classes. Before, the class-of-service bonus maxed out at 300 percent. On the other end of the scale, some economy class tickets will now earn only 25 percent of the miles flown, down from 40 percent. Business class, which earned 130 percent in the past, now earns between 100 and 250 percent, depending on fare purchased. For details about all of the recent changes, visit http://insideflyerus.wpengine.com/link/?11913