The ultraslim, metallic, chiclet-styled obsession all began back in mid-2007, but a revised iMac in March of 2009 delivered something else: a chopped-down version of the Apple Keyboard. If you'll recall, that one dropped the numeric keypad and gained two peripheral USB sockets, making it one of the more compact desktop keyboards on the market. Just shy of its second birthday, it seems as if the supply chain overlords in Cupertino have seen fit to discontinue it, though a number of e-tailers still seem to have stock for the moment. If y