So this news popped up in my thing this morning.http://www.slate.com/blogs/future_tense ... _now_.html
Basically a website that's dedicated to the resale and second hand sales of digital goods, including music, books and movies is obviously being sued by record companies. The latest in the case is that the site hasn't been shut down based on EMI's initial arguments. Which is that the software is making unauthorised copies of the music.
It's certainly one to watch. If ReDigi are successful in their defense, it could set a precedent to all online digital media distributors to allow or integrate second hand sales into their software, to avoid being cut out of the market.