Measuring the blogosphere's influence

Technorati's David Sifry writes that the most influential media sites on the web are still well-funded mainstream media (MSM) sites, however, a lot of bloggers are achieving a significant amount of attention and influence. Blogs like Boing Boing and Instapundit are highly influential, especially among technology and political thought leaders, and sites like Gizmodo are seeing as much influence as mainstream media sites like MTV.com. (Via Micro Persuasion)