Wikipedia is protesting against SOPA and PIPA by blacking out the English Wikipedia for 24 hours, beginning at midnight January 18, Eastern Time. Readers who come to English Wikipedia during the blackout will not be able to read the encyclopedia: instead, you will see messages intended to raise awareness about SOPA and PIPA, and encouraging you to share your views with your elected representatives, and via social media.
SOPA and PIPA represent two bills in the United States House of Representatives and the United States Senate respectively. SOPA is short for the “Stop Online Piracy Act,” and PIPA is an acronym for the “Protect IP Act.” (“IP” stands for “intellectual property.”) In short, these bills are efforts to stop copyright infringement committed by foreign web sites, but, in our opinion, they do so in a way that actually infringes free expression while harming the Internet. Detailed information about these bills can be found in the Stop Online Piracy Act and PROTECT IP Act articles on Wikipedia, which are available during the blackout. GovTrack lets you follow both bills through the legislative process: SOPA on this page, and PIPA on this one. The EFF has summarized why these bills are simply unacceptable in a world that values an open, secure, and free Internet.