This is a bit off-topic, but Diners Club offered 30% bonuses for US and UA (expired, I think, but I'm not sure), and it offers a 50% BA bonus each summer. I believe that Amex is offering a 25% bonus for CO, and does from time to time. Several months ago, DL offered a 25% bonus from all of its hotel programs, including Starwood (i.e., 25% + 25%). Starwood recently offered a transfer bonus from Amex (1 for 2 instead of 1 for 3). Has anyone seen transfer bonuses for AA or NW?