I was about to write an article that GrooveShark shut down as of last month. However, it looks like only the U.S. has shut down (grooveshark.com), not the British (grooveshark.io). If I remember correctly, I’ve read that they allowed more music to stream on their service, then the licenses they’ve paid for. I don’t think they were trying to do anything illegal; it just may have been that there was a technical mix up (physical hardware/network). Unfortunately, because of that, they got caught up in all kinds of U.S./international copyright legalities, and got sued. Copyright can and do get ugly. That’s unfortunate.