For those wanting to dig a little deeper into the ethics of copyright and fair use, I must highly recommend these two articles by theologians John M. Frame and Vern S. Poythress, on the theological and philosophical underpinnings of such laws. These articles are dated (to the era when photocopying was beginning to come into the fore!), but many of their insights are still valid and can serve the world well as it begins to wrestle with issues like online filesharing, DRM, and internet freedom.
They argue that while we tend to believe copyright protects the artists and allows for true creativity, the opposite is actually true. Copyrights, at least as currently restrictively conceived, hinders the creative process, hinders technological development and the advancement of civilization.