Netanel explores the tensions between copyright law and free speech concerns, revealing how copyright law can impose unacceptable burdens on speech. Netanel provides concrete illustrations of how copyright often prevents speakers from effectively conveying their message, tracing this conflict across both traditional and digital media and considering current controversies such as the YouTube and MySpace copyright infringements. Taking First Amendment values as his lodestar, Netanel argues that copyright should be limited to how it can best promote robust debate and expressive diversity, and he presents a blueprint for how that can be accomplished.