Movie trading is something I've never really understood. Porn yes, it's stuff that is hard to get and embarasing to purchase over a counter, but internet video is such terrible quality. I guess I just don't have the patience for crap video as I do for crap audio. Although I've certainly enjoyed seeing Futurama episodes months before they come out here. But that sort of quality isn't something I'd paid for. I guess most of it is the desire to see something you can't currently see.
All the more reason for global release dates.