Jesse over at Beer and Nosh peeped this scene about an hour ago.  As a sign that I'm not a true San Franciscan, I honestly don't get why people do this to themselves.  It's a device that connects you to the internet.  Presumably, you are already connected to said internet (via needing iTunes to use the damn phone), so you've probably heard of this ecommerce thing.  Whatever.  Free snacks!