Nabbing Canon's little PowerShot SD770IS 10 megapixel shooter with optical image stabilization for $160 from Amazon is a decent deal, though not great. Like many of this year's so called Black Friday deals, a little mouse-work will likely uncover the same prices elsewhere. But read Amazon's fine print and you'll see that you can add a free, 4GB class 4 SDHC card (something you'll likely want to purchase anyway) to save another $11 or so on your purchase. What Amazon doesn't tell you is that you can add any Kingston SDHC card for free. Right, including the $30 16GB SDHC card (ships after Chistmas) or $15 8GB class 6 card (ships before Christmas). Free shipping too and tax free -- $159.94 is your final price. Just hit up the l