Is Blogging Dead?

One of my friends said that blogging is dead. A lost art. Everybody now tweets. What words of wisdom can be generated in 140 characters or less? I think I keep my blogging pretty short and sweet. I don't get a lot of responses, but I was hoping that the reason for that is people are shy. Their written word is out there for everybody to see. Perhaps I'm a dreamer and nobody IS reading my blog.