So, there are endless editorials about how blogging is revolutionizing writing and, ahem, "communications".
Then, we get this wake-up call: Only 2% of people who go online even check one blog once a week. And, I'm willing to bet that that percentage is dropping.
So, instead of comparing blogs to the Gutenberg press, let me suggest the following analogy:
Blogs are today what CB radios were in the 70s. Remember the 70s fad for buying a CB radio and listening to the truckers? That's a good model for blogging.