Researchers, including students, must accommodate to the mutating character of hyperlinks on the World Wide Web. A small study of citations in three volumes of BCQ demonstrates the phenomenon of 'URL rot,' the disappearance of sites cited in the sample articles. Digital technology itself is now being used to create pockets of permanence, but with the understanding that preservation of content is only one ingredient in the mix of media and format migration. Databases like JSTOR offer digitally preserved copies of many scholarly journals. Online journals and search engines may offer their own archives. In general, researchers should cite digital articles in databases where possible and consider avoiding references to online journals with print editions.