Remember when you had to "walk" to a "store" to buy things? Our grandkids are gonna weep uncontrollably when we explain queuing up at Our Price to buy VHS tapes. We'll recall the date the final nail was driven into brick and mortar's coffin: November 2nd, 2011 -- the day Amazon's A9 released Flow free on the App store. With Flow, you just walked into a store, scan the barcode of a book, DVD or
