Blogs not as important anymore?

I recently read a post about the declining importance of blogs. One of the factors that the author mentions is Twitter, which I wondered and wrote about previously in this blog. However, what I'm seeing isn't a decline in importance, but rather such widespread acceptance that it has become a necessity. Rather than reading a blog because it is a blog, blogs have become integrated with our "internet experience" so that we treat it like any other form of content.