Million dollar idea

This one is a little risque, so if you are easily offended, you should probably stop reading now. After seeing several used book stores, I can't help wondering why there are no used porn stores. What do people do with their old porn, just throw it away? If the internet has taught me anything, it's that there is money to be made in the adult entertainment venue. Mostly what I think is best about this idea though is the name of the business. Second Hand Porn. It is the perfect combination of simply descriptive and revolting inuendo. So there you have it. That idea is free for anyone to use, and if you do, please don't tell me about it.