@Maurice Chism I'm not sure I've heard of anywhere else like this... usually innovation is not a one off... unless maybe it is what it seems in that it was much harder to pull off and so wasn't tried again. Occam's razor applied... I'm not sure the "conventional" explanation is the simplest. But I don't know enough about this particular site to really draw much of a conclusion one way or the other, and people do have a tendency to exaggerate and whatnot.