A Blog is a Disccusion Board Is a Blog

That blog thread on TechRhet has led to some interesting blogging about the value of blogs in the writing classroom. Here's a description of a class blog on Dr. B.'s Blog. I'm not sure, however, if the class blog is really no more than a discussion board, which could just as easily be done using good, open access discussion board scripts; phpBB, for example. In other words, I don't think everything created by blogging software is in fact a blog. I don't think a space where students write their thoughts or comment on others' thoughts is a blog. Seems to me that blogging software has been used to create a discussion board. That's fine. Maybe it's easier to use blogware to set up a discussion board. But a blog, whatever it is, is not a discussion board.