Last year we had a conference in the Casa about sustainable hospitality exchange (SHE). This was before this website existed. You can find many traces of this gathering all over the house, like the she-mindmap in the kitchen, the four open space principles near the entrance and some other sayings on the wall in the Zula, in addition to some stuff online: The thing you can notice in the casa the most though, is the way we host and how we resolved the traditionally unequal relationship between hosts and guests, which you come across in 85-99% of the cases you do 'couchsurfing'.
Staying over in Berlin for ten days and meeting people who share the intention of creating, or helping sustaining similar places like casarobino, made me think (again) to do yet another SHE conference.