"If enacted, SOPA would overturn laws relating to the Digital Millennium Copyright Act's safe harbor provision, and would allow any government or corporation to block a website, remove it from a search engine, and/or cut it off from payment processors or advertisers, due to a simple allegation that the site posted infringing content, or accusation that the site contained links to infringing content. As a result, sites like Wikipedia, Twitter, Facebook, or YouTube could be required to monitor for any "banned" links, resulting in delegated proactive censorship of the Web, not to mention significant additional operating costs. These sites and others that rely almost entirely on user-generated content would struggle to stay afloat under these rules, and the internet – engine of innovation that we now know – would be irreparably changed for the worse."