Fact is, I use BadBlue.com. It mines Twitter, 24 by 7, to see which headlines are getting the most buzz.
There are now three BadBlue news feeds: one for politics (BadBlue.com/News), one for technology (BadBlue.com/Tech), and one for finance (BadBlue.com/Money).
Check 'em out if you get a chance. They seem to be one of the fastest ways to keep up with breaking news.