But I'm still not sure that any damage would be caused, using your pic as an example. I'm afraid I don't see what's so reprehensible about doing what you did there. You didn't stand on the cupmark, or kick it, or chisel your name into it.

I know Resonox has used the "monkey see, monkey do" argument before, but if someone was to see this picture and do exactly what you did, what harm would be caused? I know it sounds like I'm labouring the point (I probably am), but really this is at the heart of this whole thread. What is it exactly that we are supposed to be "against" and what are we supposed to be "for"?