Robert Scoble posted a great video with Eric Englemann, general manager of Bloglines.
I can't imagine how I would keep up with all of the things I'm interested in without a feed reader. Having converted from NewsGator to Google Reader I can't imagine how people can live without them.
This summer I set my mother up with a GMail account so she could use Reader to track the her favorite blogs. She's never looked back. Explaining RSS isn't always easy. This video does a pretty good job, even if it's couched in a very geeky context.