How about a category for the website Amazon under Website Application Instructions -> Shopping? http://www.wikihow.com/Buy-Things-on-Amazon-Without-a-Credit-Card http://www.wikihow.com/Create-an-Amazon-Astore http://www.wikihow.com/Improve-Your-Amazon-Picks http://www.wikihow.com/Leave-a-Review-on-Amazon http://www.wikihow.com/Shop-on-Amazon.Com http://www.wikihow.com/Sign-up-for-Amazon-Prime http://www.wikihow.com/Buy-Books,-Movies-and-Music-at-Amazon http://www.wikihow.com/Use-Amazon-on-Demand http://www.wikihow.com/Make-Money-With-Amazon.Com http://www.wikihow.com/Create-an-Amazon-Store-Front
You could also add Use an Amazon Kindle
http://www.wikihow.com/Category:Amazon – Done =]
