Consumerist has an interesting post on the games credit card companies play to try to get more money out of you. At least half of them sound blatantly deceptive and should probably be illegal.

I just pulled out my bill to verify that the due date was when I thought it was (it is), but I discovered another interesting thing, albeit minor… (A one-penny difference.)

While I get 3% cash back on certain things, I only get 1% cash back on “Everything Else” (which sounds like a Mastercard trademark—”For Everything Else, there’s Mastercard”). To date, my “Everything Else” spending has been a paltry $115.57. So what’s 1% of that? $1.11557, or $1.16, right?

No, $1.15. They round down/truncate.