I just got this from a Citi email. I wonder if it is one bonus per card, or one bonus per AAdvantage account. Thank you for being a CitiBusiness® / AAdvantage® cardmember! To celebrate the 30th anniversary of the AAdvantage program, the AAdvantage program would like to thank you with 1,000 AAdvantage bonus miles . In order to qualify for this offer, you must provide the primary cardmember's AAdvantage® number and have an open credit card account. This limited 30th anniversary offer starts on May 10th, at 12:01am CST. To be sure you are one of the qualifying recipients, visit www.aa.com/AAdvantage30 on May 10th to register and reserve your bonus miles. ¹ In order to be eligible for this promotion, you must have an open Citi® / AAdvantage® credit card or CitiBusiness® / AAdvantage credit card, and your account must be open on or before 5/8/2011. If your credit card account is closed for any reason, you may no longer be eligible for this promotion. Eligible Citi® / AAdvantage® and/or CitiBusiness® / AAdvantage® credit cardmembers will each receive 1,000 American Airlines AAdvantage® bonus miles. The 1,000 AAdvantage® bonus miles will be awarded to each eligible credit cardmember who registers for this promotion. The AAdvantage® number registered for this promotion must belong to the primary credit cardmember. ² The American Airlines AAdvantage® bonus miles awarded through this promotion do not count toward the annual mileage cap on your Citi® / AAdvantage® credit card or CitiBusiness® / AAdvantage® credit card. The AAdvantage® miles will be posted by the AAdvantage® program and will appear as a bonus in your AAdvantage® account by 06/15/2011.