I find Fark to be a surprisingly good source of news ranging from serious to fringe. There's enough of a balance of left-wing and right-wing assholes that something about everything will get posted. I also hit:
www.drudgereport.com
www.msnbc.com
www.bbc.co.uk
www.cnn.com
www.foxnews.com
www.shortnews.com
just to make sure I get a broad spectrum of news sources. Being quite liberal, I think that hitting some news sources from the right mgives me some insight into what those who think differently are saying about stuff, and (frighteningly,) sometimes other views make more sense.
It's all about broadening my horizons.