Allow Commoncraft to explain RSS Feed. In my opinion, utilizing RSS feed in the classroom is an extremely effective way of globalizing your classroom. I cant think of a better way to open your classroom up to the cyber-world while making it fun and exciting for the kids. Allow the internet to come to your kids by subscribing to RSS feeds via a web aggregator - like Bloglines. Eliminate web surfing (which waste precious class time) and streamline your internet usage.
Check out this video from Commoncraft.