I received this offer in the mail as I have the Citi AA Visa. There is a reference code that appears to be tied to my account, but I wanted to make people aware of this one. Card Offer: Add a Citi AA Amex card to your account and receive the following bonuses: 20% more RDM earning on purchases within the first 18 months of ownership 20,000 bonus miles with $500 spend in four months No annual fee as long as you keep your Current Citi AA card account open. One of the notes says that mileage caps are shared. This doesn't seem like the best deal to go for but if you can't cycle the Citi cards it may be worthwhile to get to add to the Million Miler status. Specific to me: I was one of those who received the AmEx earlier and activated it (oops), so I'm wondering how to best take advantage of this offer. Any suggestions welcome - I'd love to get the 20k RDM for that spend requirement.