Blogs are very important these days. Even Mahmoud Ahmadinejad has one. The invention of the Web log, we are told, is as transformative as Gutenberg's press, and has shoved journalism into a reformation, perhaps a revolution. The ascendancy of Internet technology did bring with it innovations. Information is more conveniently disseminated, and there's more of it, because anybody can chip in. There's more "choice"--and in a sense, more democracy. Folks on the WWW, conservatives especially, boast about how the alternative media corrodes the "MSM," for mainstream media, a term redolent with unfairness and elitism. The blogs are not as significant...