http://decentmarketing.typepad.com/
http://consultingclicks.blogspot.com/
http://free-marketing-ideas.blogspot.com/
http://insiderscripts.blogspot.com/
http://articlemarketing.blogspot.com/
http://marketing-mania.blogspot.com/
http://marketingfingerfood.blogspot.com/
http://marketinghelp.blogspot.com/
http://hypnosis-marketing.blogspot.com/
http://sethgodin.typepad.com/seths_blog/
http://marketinginsideskinny.blogspot.com/
http://imarticles.blogspot.com/
http://toprank.blogspot.com
http://kenchelsgilli.blogspot.com/
Taken from:
http://imarticles.blogspot.com/2004/01/interesting-marketing-blogs.html

I guess the majority of marketing folks are technically challenged and therefore don’t roll their own technology but rely on a hosted solution through Google (blogger aka blogspot) or Typepad.  Or perhaps this is simply a bias of this list which I found on a blogjet discussion board.