As JKOnTheRun notes, Amazon Mobile has landed on the Android platform--further evidence of Android's momentum. The free software provides 40 shopping categories, 1-click purchases, account management, order history and more. And using the camera on an Android device, you can snap a picture of a product barcode, even if you're standing in the middle of a store, after which Amazon will search for the product and others like it, showing them to you. Do you shop a lot? That instant online comparison capability might save you a lot of money. Check out more here.