This is an observation that I have not heard about too often in my travels. As digital immigrants, we expect that we will have some issues with cognitive dissonance as we enter into blogging-as-practice and pedagogy, but Clay brings up examples from what he is seeing with his students. This is new for them as well, and this is equally as hard for them. By becoming consistent writers through blogging for larger audiences, we are kicking the chair out from under them, so to speak.
In order to get some of these ideas going a little deeper, I will re-post Clay's comment on "Blogs as Conversations," here:
Think about the structures we have always placed on the writing process. We still use those structures, only the end piece is shifted dramatically. Audience is the most intriguing factor for us as teachers of writing because of the stress it places on the earlier steps of the writing process. Just by allowing for other students to access your writing openly and without the constraint of a 40 or 80 minute class period, it places new stress (what I would call "good stress") on the writer as he or she develops ideas, formulates syntax, and revises. Eliminating the time constraint that a student's work is open to others really transforms the whole process.
Professional development for students? I like that one, and our teachers will like to hear that as well.