The Deletionist

The Deletionist is a concise system for automatically producing an erasure poem from any Web page. It systematically removes text to uncover poems, discovering a network of poems called “the Worl” within the World Wide Web. [...] The Deletionist takes the form of a JavaScript bookmarklet that automatically creates erasures from any Web pages the reader visits. A similar method has been used in Ji Lee's Wordless Web, which removes all text from Web pages, as well as applets that turn web...

 Spider Trap

A spider trap (or crawler trap) is a set of web pages that may intentionally or unintentionally be used to cause a web crawler or search bot to make an infinite number of requests or cause a poorly constructed crawler to crash. Web crawlers are also called web spiders, from which the name is derived. Spider traps may be created to "catch" spambots or other crawlers that waste a website's bandwidth. They may also be created unintentionally by calendars that use dynamic pages with l...