File-share creators screwed over

The US Supreme Court has ruled that the creators of file-sharing software are to blame for whatever its users do with it. This means that the creators of software such as Kazaa or Bittorrent could be sued because some of the users of their software use it to share files illegally.

I am going to start distributing a new tool that can be used to pirate books. It's a revolutionary tool that will allow you to make as many copies of written works as you like. It's called a pen and paper. Just make sure you don't use it to share any books illegally though because I may get sued by the publishing company for helping users copy and share copyrighted works.

What absolute rubbish this ruling is. They obviously didn't think this through very well. I copied half a sentence from the BBC News website so the BBC could sue Google for letting me use Blogger to copy and share half a sentence from their website.