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*It's easy to earn 2 ThankYou points per dollar, and possible to earn more depending on your consumption pattern, because several Citi cards award 5 points per dollar for various categories.
I have 2 accounts attached to my TYN account but do not get 2 points per dollar on with either. My only point perk is flightpoint miles for tickets purchased with my Citicard.
I get 1 point per $ on SPG but 5 points at starwood properties.