The Technology Source at Michigan Virtual University has a good article on RSS - The Next Killer App For Education:

Imagine having the news that interests you automatically delivered to your desktop, or being alerted to updates on your favorite Web sites without visiting them first. Picture yourself as a news provider to specific people who share your interests or just appreciate your commentary. Most commonly used to support the publication of weblogs and Internet news sites, RSS is an important development that promises to have a substantial impact on the world of education.