Can the world live without Wikipedia for a day? The shutdown of one of the Internet's most-visited sites is not sitting well with some of its volunteer editors, who say the protest of anti-piracy legislation could threaten the credibility of their work. The protest is aimed at the Stop Online Piracy Act in the House of Representatives and the Protect Intellectual Property Act under consideration in the Senate. Both bills are designed to crack down on sales of pirated American products overseas, and they have the support of the film and music industry. Among the opponents are many Internet companies such as Google, Facebook, Yahoo, Twitter, eBay and AOL. They say the bills would hurt the industry and infringe on free-speech rights