David Belkind runs sarapis.org. They are behind nycprepared.org. They have also built an experimental WordPress based game/bank.
In addition he is an editor-at-large of occupywallstreet.net, wrote The FLO Consensus, and is finishing a forthcoming essay about how cryptocurrency and online games will unleash tremendous wealth over the next 10 years.
He is on the board of the Community Free Software Group and the Sahana Foundation.