Yeah, we have a Delta Skymiles AmEx Platinum card. It's SO going when the renewal rolls around. It used to be great as you got a free companion ticket, so we basically got two tickets for the price of one waaay back when. They changed the program last year, I think, and we weren't able to save anything the way the new system worked, so the card is GONE.
Anyways, I was literally getting two or three of the Delta Skymiles Reserve Amex offers each week. The PAPER they wasted alone was a shame. I got up to around a dozen or so of the things and finally called and got myself taken off their mailing list for offers. Crazy waste of resources, and HELLO!!! $450+ for a freakin' CREDIT CARD?!! Uh, no thanks.