Not quite—the party's not mine and "late" hardly captures the tardiness of my contributions. Mostly, I'm bowing out because I need to consider my terms in more depth before mouthing off about an "academic blogging" vs. "academics who blog" distinction.
As Rich argues, the idea that bloggers cultivate a particular voice—irrespective of its resemblance to any actual one—throws a wrench into distinctions based on content. Even if I do nothing but write informally about Matters Academic & Professional, this medium entails a different—more personal, more personalized—approach to the material addressed through it.
Not to mention the many others I missed.