[Zak]

Permission is what's required to keep from getting sued, except that the DMCA keeps you from getting sued when it's user-submitted content. Permission isn't necessary at all. Maddox is promoting originality because it's a component of having a quality site. I'm sure he's aware that most of the people running those sites don't care about quality and is making an issue out of it because he wants other people to dislike the sites.