I've (only) recently discovered Digg. It's a user contributed and modded news gateway site. (If that sounds like Slashdot, well, it's because it's LIKE Slashdot, but better.) Users submit the news stories and all of the readers decide to either digg it, or not. If more people digg a story, it floats to the top.
Additionally, you can see what stories other users have dugg, and if you have an account you can add your friends as, well, friends and compile all your friends stories into one feed. That's right, feed.. as in RSS feed. In fact, you can get any user's list of dugg stories as a feed. Pretty cool.
Additionally, there's a DiggNation podcast (iTunes URL!). Really, that's how I found out about the site. I heard Kevin Rose (of Systm, and formerly of Attack of the Show and Screensavers) on the TWiT podcast talking about it.