Peerflix is a service where you trade DVDs. Instead of warehouses full of DVDs like Netflix and rent those DVDs out, Peerflix is based on its member’s DVD collection. You send whatever DVD you want to send away for one that another member sent to Peerflix. It’s not a direct member-to-member trades either. It goes to Peerflix and they check the condition to see whether or not it usable. You can’t send in copies of your DVDs. You do have to pay for shipping your DVD, but you only send the DVD without the case so it’s as much as regular mail.