Since very few people on the visible side of the pornography industry are wearing any clothes, it seems like it would be a very casual business. But it’s about as organized and avaricious as any business on the Internet, and it’s getting angry. Many pornographers have banded together and formed the PAK Group, a sort of naked RIAA or MPAA, and they’re preparing an onslaught of litigation on anybody they can find that’s pirating their intellectual property and making a buck on it. …styled after the ever-so-popular