Originally Posted by
iahphx
From correspondence, I understand that others have recently had their Citi accounts closed for perk abuse. It seems best not to "go crazy" with your Preferred card. Of course, nobody really knows what level "crazy" is.
Or go crazy for 1 month and then take your points and run.

No, I have not tried that. I am in the middle, trying to understand / push where the "go crazy" level is.