An anonymous reader writes with this news from Torrent Freak, from which he quotes: The City of London's Police Intellectual Property Crime Unit and copyright and royalty group PRS for Music have teamed up for what appears to be a first-of-its-kind action. Arresting a 46-year-old man, this week police shut down one of the Internet's few karaoke-focused BitTorrent trackers. While at some stages wildly popular in the East, to most in the West a night at a karaoke bar is probably more closely associated with too many beers and individuals belting out classics wearing the aural equivalent of beer goggles. The pastime is considered by some as a bit of a joke but karaoke is big business. According to the people behind the web-based Playstation software SingOn, the global karaoke market could be worth as much as $10 billion.