What is the DMCA?

The Digital Millennium Copyright Act of 1998 (DMCA) is a U.S. law that limits the liability of online service providers for the copyright infringement caused by their users. To qualify, online service providers must do--and not do--certain things. The most well-known aspects of the DMCA are its requirements that a service provider remove materials after it receives a notice of infringement and have (and implement) a policy to deter repeat infringement.