I've been searching for a clearer answer on this, but everything I have found in blogs and forums is just old enough for me to not be sure, so I'm looking to see if anyone has recent advice on this question: 19 months ago, I applied for and received the Citi AA Amex and Visa using the two-browser trick. About six months ago, I downgraded the Visa to the fee-free Bronze World Mastercard, and I still have the Amex active (they waived the annual fee again, and I kept it for Small Business Saturday and promos that come around once in a while). Anyway, I'm due for a set of cards right now, and I'd like to add the AA World Mastercard with 50K point signup to that party... but I want to be sure I'll get those points if I do. Also, if I do go with the AA card, I assume I *won't* be able to also do the Citi Hilton Reserve, right? (My preference is in the AA card anyway). Any tips? Thanks!