from a chat with gabriela:

Brazil and Milan are also joining in, next to 20-40 hispanic cities in the world ...

Gabriela Mafort is volunteering to set up a network of citizen journalist bloggers to report on the day/action and the collected local initiatives and to generate a social media campaign ..

initial ideas just suggested in a chat with gabriela:

Social Media Campaign: theme: "Let the world know what you are doing"
 Gabriela:  I´m in.
 me:  Addressed to the Sharers, Cooperators, Commoners and Peer Producers of the World!!
Motto: "peer producing a thrivable world"

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P2P Foundation: http://p2pfoundation.net  - http://blog.p2pfoundation.net

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#82 on the (En)Rich list: http://enrichlist.org/the-complete-list/