Why Have Blogs on the Left Grown Much More Than Blogs on the Right the Last Two Years?

According to a recent study, the highlights of which are noted here, blogs "on the left" have grown much more in readership than blogs "on the right."  The interesting question is why?  My guess would be that the blogs "on the left" are actually fairly far to the left of the traditional media, so they provide an outlet and opportunity for points of view that are often invisible in the major media.  The right-wing blogs (InstaIgnorance et al.) are, by contrast, largely echo chambers for the same conservative propaganda that is served up on Fox TV, the Wall Street Journal editorial page, Rush Limbaugh, and numerous other media outlets which already reach tens of millions of people.  Since the right-wing blogs provide less new "perspective" and less new misinformation, they have not attracted as many new readers as the blogosphere has become better known.  By contrast, many of the blogs "on the left" really do provide access to information and perspectives that are almost invisible in the mainstream media, from CNN to The New York Times to National Public Radio.