"sito" (which, in all its glory, really means if "a bunch of us" seem to like the idea! haha) would be willing to host it, i think its safe to say. there are definite technical (and people-energy!) things that we need to conquer.
not to mention just coming up with a good set of "game-rules" to play by, which has always been one of the cornerstones of what makes or breaks sito synergy fun.
certainly flash would *greatly* reduce the number of people that could be involved (flash-*building* as opposed to flash-*using*, i mean). and thats an important thing "we" take into consideration. something as limited as flash-building-collab, therefore, would take a kinda second seat to more inclusive (and busy!) projects we might already have going on. again, the shortage of various energies.
but this discourse is good -- it gives us an idea of who is interested. in a parallel sito universe, we would probably have some sorta advanced suggestion and voting mechanism to come up with new ideas!!