Trebor Scholz and Judith Rodenbeck bring up an interesting topic in their dialogue on Collaborative Mapping (the bittorent video will be available here shortly). It's a topic that needs much more exploration and their's is a start: When will new media be accepted by the art establishment?
Rodenbeck gave a solid, if academic, rundown of historical "participatory" art forms while Scholz gave examples of current practices. Unfortunately not much was resolved, but it's a start towards a much needed discourse, something we hope to nurture here.