There has been a proliferation of Think Tanks in recent years, with nearly 7,000 world wide. An Open Think Tank is a project to create a think tank that uses a structured but open collaboration model.
While there are many online communities that directly or indirectly aspire to many of the Open Think Tank Goals, I know of none that are structured explicitly and constitutionally for the benefit of Knowledge Curation and creation.
https://audioboom.com/posts/6068474-open-think-tank.mp3
A first rough introduction to the aims of Thought Garden and the Open Think Tank. View this recording over at - audioboom 
# Social Editorial
We aim to build a Social Editorial which differs from the Wikipedia type models that we are familiar with, nor do we wish simply to re-instate editorial panels as you might have in scientific publishing. We look for new structures, based on older ideas like Liquid Democracy and Reputation.