Matt Blaze: Shaking Down Science: "Fortunately, these copyrights have been honored mostly in the breach as far as author-based web publishing has been concerned. Many academics make their papers available on their personal web sites, a practice that a growing number of university libraries, including my own, have begun to formalize by hosting institution-wide web repositories of faculty papers. This practice has flourished largely through a liberal reading of a provision -- a loophole -- in many copyright agreements that allows authors to share 'preprint' versions of their papers."