Imagine a World Without Free KnowledgeAnd that "learn more" link leads to a FAQ of sorts that offers Wikipedia's explanation of the legislation:
For over a decade, we have spent millions of hours building the largest encyclopedia in human history. Right now, the U.S. Congress is considering legislation that could fatally damage the free and open Internet. For 24 hours, to raise awareness, we are blacking out Wikipedia. Learn more.
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.You can also, if you're so inclined, track the legislation via the Library of Congress: