It may seem odd that, in a book examining the creation and use of digital information, the core concept of information is not defined. This state of affairs is not unique to the present book; it is part of the corpus of writings and discussions of information in disciplines that are now turning their attention to the emergence of new communicative forms and digital resources. This taken-for-granted nature of the information concept might not unduly worry us were it not for some important implications that surely follow from its mercurial status as a catchall.