What about blogs?

In the original sites list provided there are numerous blogs. But what is the inent of a blog? Is it art? or is it to let the world know what you think. I think it is the latter in most cases. For example we make money not art is devoted to talking about art. Still this could be considered art as commentary on the subject is the concept behind many works.
The majority of blogs about art are simply an analysis of work, a list of new shows, and reviews. Thus, in my opinion, these are not art.