By utilizing "Streams" instead of the standard mail model of reading feeds, NewsRiver allows you to zip through hundreds of articles in minutes.
When you follow a lot of different websites, a few days away from your RSS reader can cause thousands of unread feeds to build up. Most people just click "Mark all as read"... but why?
By implementing a river method of news reading as popularized by Dave Winer. We're just trying to show everyone that "Hey, there IS a better way of doing this!" The river of news system doesn't care about data that is more than an hour old - but if you leave the application open you can scroll back to wherever you want!