P2P Collaborative Concepts
MetaCollab is building an elaborate encyclopedia of concepts related to cooperation.
See http://collaboration.wikicities.com/wiki/Main_Page and click on the topics at the top of the page.
Check out this report: Online Tools for a Sustainable Collaborative Economy
Here is a guide to Website Conferencing Tools 
Kolabora of Robin Good  is also recommended.
This will be monitored in our new section on P2P Facilitation Concepts .