1.	As part of my work at Berkman Center, where we're studying weblogs and learning how to apply them in academia, I wanted to get closer to a definition, to try to answer the question posed by the title of this piece.
2.	Rather than saying "I know it when I see it" I want a list all the known features of weblog software, but more important, 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.
3.	I had originally planned to publish this piece via email, but the work continues, and rather than freeze it in time, I wanted to give it a chance to continue to evolve, especially the bibliography, which may be the first of its kind.