The Daily Kos does a quick analysis on their sources of news:

While newspapers were the most common source of information, they accounted for just 123 out of 628 total original information sources, or just shy of 20 percent. And a huge chunk of that, up to half, came from links in the Abbreviated Pundit Roundup, which is specifically designed to track what some of the nation’s top pundits are yammering about.

I do think that the argument “blogs just rely on newspapers for their information” holds little water. Any blogger knows that real traffic and growth comes from original material, and there’s a strong incentive to do so.

That said, I’d like to see a little more about just how Kos came up with his numbers. Better yet, an actual spreadsheet of the data, instead of some random summary.