I came across this page ” RSS – A Primer for Publishers and Content Providers“. I should say that this page does a great job of explaining what RSS is! The explanation is plain, simple and lucid. Thoughts are clearly illustrated with pictures … All I can say is if you are still wondering what RSS i.e Really Simple sydication is then click here. It clearly explains the technology for a non-technical audience.
The page also talk about some case studies. I liked the following diagram (taken from the site):
Other links that explain RSS can be found in my delicious bookmarks on introductory RSS articles on the web.