Well, the following are pretty much standard and usable for most keywords:
http://news.google.com/news?hl=en&ne...&q=yourkeyword
http://news.search.yahoo.com/usns/yn...?p=yourkeyword
http://search.msn.com/news/results.a...&q=yourkeyword
They need some re-formating, but you'll get content for allmost every topic in mainstream...or go scrape some article directory for your keywords, just make sure to keep the credits as stated in their rules.