This was a random link at the top of my Gmail page:

Moviemakers win legal battle with DVD sanitizers

The mainstreaming of sophisticated digital-editing technologies has fueled the cottage industry of movie sanitizers. CleanFlicks and others purchase an official [...] copy of a film on DVD for each edited version of the title they produce through the use of editing systems and software.

The official-release disc is included alongside the edited copy in every sale or rental transaction conducted. As such, the companies argued that they had the right on First Amendment and fair-use grounds to offer consumers the alternative of an edited version for private viewing, so long as they maintained that "one to one" ratio to ensure that copyright holders got their due from the transactions. [Senior U.S. District Court Judge Richard] Matsch disagreed.

"Their business is illegitimate," the judge wrote in his 16-page ruling. "The right to control the content of the copyrighted work...is the essence of the law of copyright."

Which, sadly, makes me wonder if the same thing isn't being done to books available in electronic format...