Haven't seen anyone do anything with RSS News yet, so I've set up a BBC World News RSS feed to Google Earth. URL is:
http://www.daden.co.uk/newsglobe/newsglobe.kmz(note new URL - put the http in there now!)
(update 27/7, 3/8)
To add your own feeds just create a Network Link to:
http://www.daden.co.uk/cgi-bin/newsbot/newsglobe.pl?url=and append the URL of the feed you want.
You can of course add multiple links to get a number of feeds displayed.
(update 4/8)
Added major world, Canada and US cities, and UK towns to the geocoding.
Added a folder with all of the main BBC news feeds.
http://www.daden.co.uk/newsglobe/bbcnewsglobe.kmzDavid