Overview
Words You Must Never Search (検索してはいけない言葉) is a Japanese wiki from atwiki and an Internet meme about things that should not be searched online. Listed searches on the site can be zany to downright shocking and traumatic. Be wary when searching such terms.
This site has a very large number of anti-personnel due to problems with the administrator, and malicious posts are sometimes made on the message boards. The Japanese pixiv article (the Japanese article linked to this one), too, was once vandalize that was riddled with inappropriate content due to a personal grudge held by a particular user. In order to keep the content neutral and to prevent unhelpful editing fights, please avoid malicious posts, such as re-writing content that is often insulting.
History
The site was established in 2011 by MNS, a Nico Nico Live host. At first, the site registered pages with little regret or pages that were made into memes on the Internet, but now there are many words with regret (those without regret have been deleted).