University of Maryland professor (and Hooblogger) Matthew Kirschenbaum points to Acid-Free Bits  a guideline for ensuring the preservation of digital-only works of literature The document is fascinating and ties together neatly some threads of investigation around web standards (don’t code with proprietary extensions  separate content from presentation using XML  validate code)  programming best practices (consolidate code  supply comments  document early and often  prefer community-directed systems)  copyright concerns (allow and encourage duplication and republication)  and library science (maintain metadata and bibliographic information)