tough reading but have to dig for nuggets of gold. Did not like diagram, as "power law of participation" is much better. See sticky note with corresponding link ;-)
This site was recommended by a colleague at the Campaign for Learning: Jamie Wright.
It is basically a visaulization - representing the "virtual world of content" - where anything is posted with the words "I feel..." or "feeling" - and/or emotions. It gives you a snapshot of the emotional world we live in.