Ah – a topic near and dear to my heart.  Like many of you who have traveled around with world with electronic equipment, I’ve been flabbergasted by the panoply of power plugs I have to navigate to get some juice back into my gadgets.  110V?  240V?  Two prong?  Three poles?  It’s enough to drive a man batty, I tell ya.  And it forces me to lug around a heavy voltage convertor, which stinks doubly for someone who prefers to travel light.  If, like me, you’ve always scratched your head and wondered how the world ended up this way, now you can finally learn why here.