My personal take is that weblogs have two roles here:

* They help break stories with their own grassroots reporting

* They help fact check and filter stories that have come out

Any individual blog post may have factual errors. But the Blogosphere as a whole is actually quite robust. I trust the Blogosphere to keep Journalists honest... and to give me a range of opinions on any given article. So in terms of my experience, I'd say that the quality of my news experience has increased.

I think the quality of news in general though, has stayed about the same. No futher comment there.