I was a little upset that I wasn't targeted when I read about this thread yesterday. Then when I got home, I decided to check the stack of unread mail on my kitchen table...I found a few pieces from AA, which I assumed were just the weekly AA Citibank Amex spam I get. However, I did notice a tri-fold "postcard" that I also tossed in the stack. Lo and behold - it was this promo!

Called and registered - quick and easy. I'll call Citi today to double-check that everything's noted properly on my account.