Blogging about Blogs

I've been reading a lot about how to use blogs in the classroom, and there surely seem to be a lot of potential for many different teaching & learning streams that can "flow" from a class blog. There are a lot of opportunities for collaboration, interaction, web publishing, and analytical thought to become part of regular class experiences. Their ability to accomodate documents, images, sound & video, as well as their feature that allows for tracking really enables seemingly endless opportunities. I sense an authentic problem here......