If I already did the 10k with my platinum (which I've since closed) any chance I can do the $10 offer with 1 or more of my others (Premier, SPG Con, SPG Biz, as well as AU on the SPG's)? They're all under the same Amex online account, ie same username and password. When I did the 10k offer it seemed as though officially you were supposed to download it and login using your userid and pass, as if that was going to identify you for the bonus. If that's the case here too, I already did that for the 10k offer. If it goes per card though, maybe I can still do it on one or more of my other cards?