' A Growing Commons ' is a proposal written by Danyl Strype for collaboration within Aotearoa and beyond to produce a high quality suite of permaculture OER. Appropedia has an overview of the various permaculture wiki projects out there, and a similar proposal for pooling our efforts, which they are working on with Sophie Novack and Evan Schoepke of Open Source Permaculture. To me, free and open licensing is the key to this. As long as a permie website of any kind is CC-licensed, its contents can be copied and built on by others, which makes it easier to aggregate larger pools of information, which are easier for newbies to find and navigate.
http://www.coactivate.org/projects/permaculture/permaculture-open-educational-resources
