From David Weinberger:
“The importance of the weblog phenomenon isn’t so much that it enables people to publish their breakfast menus or even their genuine insights. It’s that we now know what our “avatars” on the Net are going to be: not graphical cartoon representations but our body of writing. You are what you write. On the Web we are writing ourselves into existence. This introduces into the self the same issues of control, inspiration, invention, deception and play as have always been present in the relationship of authors to what they write.” That about sums it up for me.