I bought a cablecard-based TV tuner ($100) and "rent" a card from Comcast -- no box sitting in my attic, and I actually get a $2.50/mo bill rebate from Comcast

I bought a cablecard-based TV tuner ($100) and "rent" a card from Comcast -- no box sitting in my attic, and I actually get a $2.50/mo bill rebate from Comcast for using my own equipment.