Stuart Henshall has left us a pretty cross-the-board link sampler of the biz-blog bards in his post on Blogging and Social Software:

It started as a list supporting "Jazz in the Blogosphere". It was also meant to provide a range... from introductory to more topical posts. From newspapers and magazines to personal blogs.

Not intended to be comprehensive, or put in Douglas Adams terms, not pretending to hold a mirror up to the universe (because no mirror is large enough) but still striking in the diversity of opinion with such unity of direction in it's a sampling of the pulse of these pundits grappling for a place for blogs in the bizworld.

Across this spectrum of writers, myself included though omitted, it's also worth a note how all these ponderers devoting so many kilobytes to the question is as interesting as the question itself ... put in Jungian terms, it's not only interesting whether biz blogs can exist or not, but also how there are so many people who wish they did.