The Internet and American Life Project found that between 2 and 7 percent of Americans have weblogs, and about 10 percent of them update their blogs regularly. 11 Percent of surfers reported visiting blogs. The study was a random telephone survey of 1,555 Internet users with a 3 percent margin of error.
Social tagging: Collaboration Tools > Microcontent > Society > The Metaweb > Weblogs