There have been more and more complaints in the blogosphere about Google News bias that favors certain media outlets and certain topics unfairly. The algorhythm is likely to undergo revisions over time, but it seems to me that many of the claims are accurate or at least valid...Google News favors major media outlets over blogging ventures.

From Wired:

Q: Why not just filter out the opinion sites?
A (Krishna Bharat, chief scientist for Google News): Google News' focus is on diversity, and that's where the real added value is. It's a bit like a bookstore that takes content on a single subject and puts it all on the same shelf. People use Google News to complement their favorite source, like CNN. You come to Google News when you want a wide range of articles - in both opinions and style - on that subject.

From Om Malik:

Here is a list of Tech Weblogs on Yahoo. No mention of Scobleizer or Russell Beattie’s or for sake of argument my own weblog. Google News will willingly bring in news from known blogs, like the ones mentioned before, but not from individual blogs, even if they are breaking news stories, and have more content than some of the aggregator-blogs. Google News rejected my big to get included in their Google News program, even though they include other blogs with more “pro” names.