Mark Glaser has done a chart of the most important blogs according to impact on print media. The blogs are arranged from liberal to conservative, and from bloggish to journalistic. It's a nice overview, though it has makes some judgements I find suprising: how is the democrat Mickey Kaus (Kausfiles) supposed to be more conservative than AndrewSullivan? And is the Drudge Report still one of the six most influential blogs?
raph: glad you liked the link; I think the issue is important and I'm happy to hear that you are thinking about how to counteract the effect. I have to confess the text with my link was a piece of unsuccessful irony, because I found Harry Frankfurt's tone rather pompous, so the piece might be seen as a bit bullshitty itself. But I do recommend folks read the essay. Also Orwell's Politics and the English Language is strongly recommended: although bullshit isn't really his target here, the mentality that lies behind it is very much addressed