Rhiz.eu (short for Rhizome)

So what's Rhiz.eu?

An intercultural meeting place developed to give its members an easy and fun environment for communicating and collaborating with each other. It takes its name from a botanical term, rhizome, meaning ‘a usually underground, horizontal stem of a plant that often sends out roots and shoots from its nodes’ (Wikipedia): the term is used metaphorically in the social sciences and new media to describe social structures that are non-hierarchical, non-centralised, self-regulating, and formed peer-to-peer. Rhiz.eu was created by the European Cultural Foundation (ECF).

http://www.rhiz.eu/article-40-en.html