Blog the Organization:
Unleashing the Power of Personal Publishing
by Doug Kaye

Update:

Well, it just didn't happen. Perhaps I was too early (Autumn 2001) but I couldn't interest any publishers in a book on weblogs, even weblogs for business. But since then, some good books have been published or are on the way:

We've Got Blog: How Weblogs Are Changing Our Culture
Rebecca Blood, editor

The Weblog Handbook: Practical Advice on Creating and Maintaining Your Blog
Rebecca Blood

We Blog: Publishing Online with Weblogs
Paul Bausch, Matthew Haughey, Meg Hourihan

Running Weblogs With Slash
Chromatic, Brian Aker, David Krieger