I would like to know if a Web Application exists, which allows me to filter news. I would like to add some tags in which I'm interested and rate some news feeds. If a new piece of news is available, I don't want to get it multiple times. I want to get the information once from the best source. If I could subscribe to a topic, this would be great.
I know http://news.google.com/, but it doesn't allow me to rate different sources or define tags in which I'm interested in, as far as I know.