Amazon has just announced its official Windows Phone 7 application that will make its mark in the Windows Phone Marketplace – for free, of course. Basically, this app intends to make life easier as you browse and make purchase decisions on products from Amazon. Swiping to the left or right will let you slide between product details, reviews, and related items amongst others, and it is no slouch to boot, being able to search through millions of products in over 40 product categories swiftly. With 1-Click ordering, Prime member support Wish Lists, package tracking and more, shopping online on a phone has never been this fun – or at least, that’s what Amazon wants you to think. Just keep a close eye out on the credit card of yours though…