"At Berkman we're studying weblogs, how they're used, and what they are. Rather than saying "I know it when I see it" I wanted to list all the known features of weblog software, but more important, get to the heart of what a weblog is, and how a weblog is different from a Wiki, or a news site managed with software like Vignette or Interwoven. I draw from my experience developing and using weblog software (Manila, Radio UserLand) and using competitive products such as Blogger and Movable Type. This piece is being published along with my keynotes at OSCOM and the Jupiter weblogs conference. And a disclaimer: This is a work in progress. There may be subsequent versions as the art and market for weblog software develops. Dave Winer, June 2003, Cambridge MA."