Mapping influence of news on blogs

Matthew Hurst writes: Mapping The Influence of News on The Blogosphere:

Inspired by a number of comments from The Hyperlinked Society Conference, I'm posting some preliminary results of including mainstream media nodes in a map of the blogosphere. The full image can be found here. These results are very preliminary and are aimed at simply getting a feel for what is going on.

I've seen similar analyses before, but I can't find them quickly.