Lee LeFever and Sachi created this three minute video to explain RSS in plain English and why if you're not tracking web information using RSS you need to do so! His post is here
This afternoon I'm teaching a webinar called Ten Steps to Extension 2.0 for Extension professionals new to Web2.0 ideas and tools. RSS is Step 5. I've been in the searching for best primers in text, photos, and video and this one is definitely a keeper.
I like how they video a diagram on a white board, use printed paper copies of the computer screens, and explain the ideas very simply. The style is reminds of Michael Wesch's now famous Web2.0 introductory video, The Machine is USing Us.