SkyMiles distributor Delta isn't a newcomer to the land of in-flight WiFi freebies. And, while this time it's not setting a time limit on your browsing, you'll have to stay within the Amazon virtual walls to take advantage. The hook-up between the airline and online retail giant will allow passengers to do some up-in-the-clouds shopping at no cost, including its Wireless store. Delta says the goal is to offer a "convenient way to shop online at 30,00
