"How big are blogs?" asked BusinessWeek back in 2005. "Try Johannes Gutenberg out for size. His printing press, unveiled in 1440, sparked a publishing boom and an information revolution" [1]. To compare blogs with Gutenberg's invention of moveable type is, perhaps, mildly hyperbolic. A blog is more of a literary style than a new form of information technology, and the World Wide Web itself bears much more conceptual resemblance to the printing press than do blogs.