I don't see how the judge could rule against Grooveshark. How is Grooveshark any different from Youtube, for instance?
The only difference is that the users, on their own, upload much less of their own content on Grooveshark than they do on Youtube. The users are more prone to upload illegal work.
But that seems like an arbitrary reason to make this ruling. It's unfortunate that the law can be so vague and ill-defined, and arbitrarily interpreted, usually to the benefit of larger corporations.
The only difference is that the users, on their own, upload much less of their own content on Grooveshark than they do on Youtube. The users are more prone to upload illegal work.
But that seems like an arbitrary reason to make this ruling. It's unfortunate that the law can be so vague and ill-defined, and arbitrarily interpreted, usually to the benefit of larger corporations.