PRblogs.org offers free blogs to PR practitioners, educators and students. The man behind the service is Robert French, who teaches at Auburn University and blogs at infOpinions?, MarcomBlog and AuburnMedia. He and his colleagues established this service to help students learn to use blogs and online portfolios in school and in their professional lives. As of this writing PRblogs hosts 276 blogs and 655 users.
Free blog service for PR folks