When last we got a new iPod touch, the fourth-generation from 2010, it was so thin relative to other devices of that era we said it looked like "a toothpick." Its 7.2mm thinness was unparalleled -- at the time. But now, just two years later, the iPhone 5 is less than a half-millimeter thicker, and that is of course packing a lot more wizardry inside. Suddenly, that toothpick is looking a little portly, which means it's time for the touch to lose a little weight. Enter the fifth-generation
