OPML feeds for education: Feedbooks

A new word, but a very fascinating one. Do you know the concept of Feedbooks?
Just start reading at the excellent weblog by Leigh Blackall from Australia: http://teachandlearnonline.blogspot.com/2005/10/feedbooks.html
"A feedbook is a living text. Students are getting material that is new. The material may surprise the instructor, but it gives them things to discuss, a real platform upon which to have a natural discussion rather than one forced by a lesson plan made weeks, months or even years earlier. As a final advantage, when the students leave the course, their feedbook goes with them, not a textbook slowly fading into kindling for your fireplace, but one that will stay current."

Flock

I just posted this through Flock, the new kid on the blo(g)ck.

I'm trying to grasp what I can do with this. Need to read this: http://www.flock.com/fiveways/togetstarted/13.php