The peer-to-peer file sharing service started a revolution in 1999 by allowing users to download songs over the Internet for free. But like most revolutions, it was fleeting. Napster died young in 2001 after a court-ordered shutdown for copyright infringement. The Napster brand was soon acquired and reopened as a legitimate online music store, unfortunately placing it in competition with iTunes, which Napster helped spawn. Though it will never again reach the dizzying heights of 2000, Napster was the rarest of things: a true trailblazer.