Grade "A" Blogging
Blogging is difficult to accurately grade or accurately 'categorize' for grading itself. I think that the Blogs should not be graded on frequency of posts, not on the subject matter of posts, but what lies within the posts. Essentially, the important thing to remember about Blogging is that it is a skill, much like reading, writing, and other arithmetic. I've seen on several rubrics: "Does the student demonstrate an active, working knowledge of the skill at hand," and I think that very much applies here.
Students as a whole do not work on the same boundaries as their peers, they work in different ways and grading something as abstractually complex like Blogging on a rigid scale would defeat the purpose of this technology. Say you have a student who uses his Blog as an open forum for book-talks or an open-debate page to discuss what's going on in a specific class; but on the flip-side you have a student who uses the blogging system as a way to put his work out there, or research other topics without really asking for help. Now, if you set the rubric to say that you have to do a specific thing, one of these students is wrong, but both are correctly utilizing this technology.
I would like to put forth the idea that blogging should be based on a student by student draft, this is rather hard to do for large-scale communities, but at the same time for what we are doing in our experimental blogging class it is the perfect way to address the grading issue. Students, at the beginning of the class should explain what they want to accomplish with their blog as a final goal or as a 'major' goal. The occasional assignment/prompt from the teacher is fine to keep people on track and to make sure they have an accurate depction of what they are meant to do. If a student then does not do what attempted to set out for the class goals, then s/he will not receive an A, the grade would then fall into the hands of the teacher based on the other work this student has submitted. I feel this is the most fair way to grade without degrading the usefulness and limiting our abilities as a community to blog.