Start Your Own Currency - "In the Catalonia region of Spain, a restaurant and a community garden are part of an experiment in alternative cash--they are accepting a home-grown currency called the Eco as well as the Euro." [viz. gated article (Google link), cf. The Wörgl Experiment]
Trust, Coordination Technology* & The Experience Economy - "It could be that the nature of technological change isn't causing the slowdown** but a shift in values.*** It could be that in an industrial economy people develop a materialist mind-set and believe that improving their income is the same thing as improving their quality of life. But in an affluent information-driven world, people embrace the postmaterialist mind-set. They realize they can improve their quality of life without actually producing more wealth." (via mr) [more inside]
Technology of Cooperation (.gif map), from Howard Rheingold's Cooperation Commons project. Rheingold on Amish technology practices. [more inside]
Anger plays a key role in human cooperation. And not only that, anger is altruistic! The link covers a behavioral experiment probing individual versus group benefits, freeloading, punishment and altruism.