The Bazaar News and Announcements from Launchpad.
There is a Bazaar-specific aggregator with the blogs of the Bazaar developers called Planet Bazaar.
There is the Bazaar developer's blog.
John Meinel has a blog and there are "back issues" of This Week in Bazaar.
Some of the things other people say when they blog about Bazaar
"bzr is a godsend. All it took to use this webserver as my “mainline” repository (or branch, in bzr parlance) was to secure copy the branch I made on my laptop here over to my public directory." - Jeff Hodgest at [http://somethingsimilar.com/wordpress/2005/11/11/bzr-is-heavenly/
"My personal favorite revision control system at the moment is Bazaar. The folks working on Bazaar-NG seems to be doing an incredibly good job of being reasonable, approachable, and polite while accepting good ideas from others - not traits that you find in all people working on distributed version control systems." - Elliot Murphy at http://raraavisresearch.com/memo/archives/2005/08/05/distributed-version-control/
"I really liked the early development versions and it sounds like the merge capabilities have come a long ways since the initial releases." - Jason Gilman at http://axodys.com/2005/09/05/bazaar-ng-07-release
"[...]»an open source distributed version control system that is powerful, friendly, and scalable«[...]" - Klaus Seistrup at http://magnetic-ink.dk/7
"[...]Bazaar looks very promising and I’m really looking forward to use it for some of my next projects." -http://beeblebrox.net/2005/05/13/version-control-systems/