Earlier this week, Technorati, a Web site that indexes blogs, released its semiannual "State of the Blogosphere" report. It records a steady, and astonishing, growth. Nearly 80,000 new blogs are created every day, and there are some 14.2 million in existence already, 55 percent of which remain active. Some 900,000 new blog postings are added every day - a steady increase marked by extraordinary...