Blogs informal or formal?

For the most part the blogs seemed to be formal, although, there were a few that were informal. I was surprised by this because I would have thought that the blogs would be informal because it is just they way that most people type to express themselves on the computer (using slang, etc) As for the quote by Kenneth Burke, I completely understood it. This quote made me feel like I was there in the parlor because it was so descriptive. I was able to relate with it because there has been several times that I have walked in when people were having a conversation and wondered whether I should try to listen and get involved, or walk away because I have no idea what they are talking about. I'm sure everyone can relate to this quote as well as I can.