Trade with cooperatively run coffee farmers in a Mexican state called Chiapas which is autonomously run by the Zapatista Army of National Liberation. The Zapatistas oppose economic globalisation, North American-style Free Trade, and the Mexican state's embrace of capitalism. The Zapatistas synthesise 'traditional Mayan practices with elements of libertarian socialism, anarchism and Marxism' (http://en.wikipedia.org/wiki/Zapatista_Army_of_National_Liberation).
Your money goes into a pot which, at the end of the 60 days, will be used to purchase an equivalent amount of coffee from the Chiapas co-operative coffee producers.
Your money will go towards the income of the farmers in Zapatista communities, and towards 'the autonomous programs of education, health, and to other social structures.' According to this Wikipedia page, 'the coffee cooperatives operate as a driving force of the Zapatista movememt' (http://en.wikipedia.org/wiki/Zapatista_coffee_cooperatives).