There is an interesting discussion in the Moodle forums about discussion forums and blogs. Martin Dougiamas has been considering adding a blog to Moodle but feels that he has found a big conceptual problem which he has thrown open to the Moodle community. What this lengthy discussion is showing is how much variance there is in the understanding of the differences between forums and blogs and how they can be used in a variety of contexts, not just within Moodle. Some of the postings are excellent. Check it out for yourself by clicking on Moodle forums (registration required).