If you’re a Comcast cable TV customer and they sent you a M-Card, a card that lets you use two tuners off the same cable card, make sure you’re not getting double-charged, reports blogger Christopher Price. They were charging him double for one card and he had to call them up and remind them that FCC policy mandates one free CableCARD per household to get them to manually remove the charge. Chris says, “If you have an M-Card, check your bill. If you don’t have an M-Card, request one from Comcast and save yourself $21.48 per year… they’re already getting enough of your hard earned money.”