The more I read about commons, the more I think they may not scale. Commons seem more workable on particulars. A fishery or the creation of some important piece of software can be handled very well as a commons, but the Bay Area would seem far too complex and when we add the global perspective, the commons approach seems to confuse matters more than clarify them -- very subjectively speaking - could just be me getting confused (;-).
Though it was my own contribution concerning the commons, I think I have to agree with Jim and Mary Jane that we should take a different direction. Doesn't mean the article I linked to isn't worth reading, but Trilight's article on Formal Consensus looks more valuable to me at this point.