For the vast majority of blogs, I propose the term "bloggerish." The word already exists, but I believe it is a descriptive term that refers simply to the nature of the blog itself. For example, you read a short little article at some website about something of little importance, written in semi-literate language, that very often has a personal gripe at its center, and it sounds "bloggerish" to you. So, that's an adjective.

My use of the term would make it into a noun. Bloggerish is the language that, in another context, would be called gibberish.