Weblogs Compendium
Definitions

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This is a list of articles which attempt to explain what weblogs are:

Anatomy of a Weblog - Cameron Barrett
Fear of Links - Scott Rosenberg
Here Come the Weblogs - Jon Katz
Unofficial Glossary of Weblog Terms - an unofficial glossary of terms related to Weblogs, Webzines, and Personal Publishing by John Hiler
Weblog resources FAQ - Jorn Barger
Weblogs: A History and Perspective - Rebecca Blood
What are weblogs? Dave Winer
What are weblogs? - the November 16/2001 definition Dave Winer
What is a weblog? - Guardian Unlimited
What the hell is a weblog? - Derek Powazek