A plain google search isn't very useful, but what MIGHT be useful is a google custom search that has all the sites you listed pre-included. (See http://www.google.com/coop/cse/ ).
If you had that and included the most recent headlines from the sites you listed, it might be useful enough to get me to try it.
If you had that and included the most recent headlines from the sites you listed, it might be useful enough to get me to try it.