In the years since passage of the Digital Millennium Copyright Act (“DMCA”), the copyright industries have demanded that online intermediaries — both those covered by the DMCA and those falling outside the statute’s ambit — do more than the law requires to protect intellectual property rights. In particular, copyright owners have sought new ways to reach and shutter “pirate sites” beyond the reach of United States law. Online intermediaries have answered their demands through an expanding regime of nominally voluntary “DMCA-plus” enforcement. This chapter surveys the current landscape of DMCA-plus enforcement by dividing such enforcement into two categories: Type 1 and Type 2. Type 1 DMCA-plus enforcement is cooperation by DMCA-covered intermediaries over and above what is required for safe harbor. Type 2 DMCA-plus enforcement is cooperation by intermediaries whose activities fall outside the scope of the DMCA’s safe harbors and who are not liable for their customers’ copyright infringements under secondary liability rules. As the gap widens between what the law requires and what intermediaries are agreeing to do on a voluntary basis, there is reason to be concerned about the expressive and due process rights of users and website operators, who have no seat at the table when intermediaries and copyright owners negotiate “best practices” for mitigating online infringement, including which sanctions to impose, which content to remove, and which websites to block without judicial intervention.