Transistr (formally known as iPodderX) has a review of news view of the data, but I never got use to reading news in that way. I tried but I just didn't feel right. Most days I like to go right to a few sources that I like to read carefully then skim the rest really fast. I also (like Scoble) like to be clear of who is saying what, and reading by feed helps do that. Lastly who wants your entertainment news mixed in with your tech(sorry for the digg on digg but it couldn't be helped:))
Anyways I see how people like the river, and I think its an option we should have; but its not an option I'm planning on using all that much in the near future.