Considering the ideological collaborative aspect of #ThisIsACo-op project involving 137 participants in an ongoing architectural co_op we did not want to intervene with a design. As one can think that having a web site already implies an agreement on a collaboration, we opted to underline this oft implicit agreement. This semi neutral inter-face, this in-between space build with browser frames, windows, desk-tops, web-sites, operating systems etc. where we are in a supposed nowhere going to somewhere, does have a language. #ThisIsACo-op web site aims to be articulated with-in this formless-form language as innocent as any other browser frame.