For example, memorandum provides links to several news stories every day, with links to multiple blogs across the political spectrum that are discussing each of the stories.

Another example is InstaPundit, written by a law professor. Glenn Reynolds is more libertarian (small "l") than conservative. There are many other examples, far more than I have time to list right now. There are about 20-30 blogs that I check on a daily basis. Some of them were days or even weeks ahead of the mainstream press in pointing out factual errors in Kerry's claims, and they've been proven correct on at least a couple points. The mainstream press has first tried to ignore the story, and now they're complaining that it has gone on too long. Cute. It seems their attention span depends on which side is getting burned.

Another beauty of blogs is that they often are created by people with professional knowledge in different subjects. I don't know about you, but when I read most aviation or space related articles in the popular press, I very often find factual mistakes. When I spot these errors, what am I to do, write a letter to the editor* that probably will be ignored? On the knowledgeable subject specific blogs, you're more likely to get factual information because mistakes are caught by the readers. Well run blogs are self-correcting.