I really hadn't paid close attention to the base of my iMac until recently. When under inspection with a bright light I see that I have caused the keyboard to inflict a very large number of scratches on the aluminum base. There doesn't seem to be any areas of base aluminum on keyvoard aluminum contact, but I don't think those scratches were caused by the plastic keyboard bottom. None of the scratches go deep and are tactilely imperceptible(can only be seen, not felt). Now for the questions. Has anyone else had a similar occurrence with their iMac, I think it would make me feel better to know I am not the only one. Secondly, since the scratches are primarily superficial can anything be done to remove or at least fade the scratches. If so can anyone recommend a method of buffing out/removing the scratches? Such as which brush, polisher, wax or other cleaning products to use. Finally I would just want to make the recommendation that anyone with an iMac should invest in some sort of protection film for the iMac base. The subject of the post, my iMac Base.