Aaron Campbell at Ryukoku University has a great piece out on how to use LiveJournal to teach EFL. It has everything you’d want in this sort of an article, including a rationale for choosing the particular technology and step-by-step instructions for educators. This is one of the clearest, most concrete examples I’ve seen for using blogs in a class.
Disclaimer
The views expressed here are solely my own and do not necessarily reflect those of my employer.