This is a nice simple explanation of what RSS is. I shall be using this little video with my students.

Stop reading, start speaking
Stop translating in your head and start speaking Italian for real with the only audio course that prompt you to speak.
[youtube]http://youtube.com/watch?v=0klgLsSxGsU[/youtube]
With thanks to the guys on the Common Craft site.And thanks to Juha Ylitalo over at his Juha Ylitalo Photography Blog for putting me onto this.