Read this article, which discusses the Online Copyright Infringement Liability Limitation Act, a portion of the Digital Millennium Copyright Act of 1998. This portion of the law deals specifically with providing limitation of liability for online service providers that immediately take down content if someone alleges a copyright infringement. It also reflects the challenges to intellectual property rights inherent in the dissemination of information over the Internet.

Please read Wikibooks’ “Intellectual Property and the Internet: Online Copyright Infringement Liability Limitation Act” (PDF)