1) say a product is available when it is not. You order, you upgrade shipping, and then learn the product is not available. If you are not paying attention, you will pay higher prices for shipping, but the product will not arrive in the time frame you think you paid for.

2) offer a product for a certain price. You order it. At some point, you check your account and learn that the price of the item has increased since you ordered it, and if they do not hear from you, they will ship it & charge you the higher price. If you are paying attention, you can, and should, cancel the order.

3) finally: aggressively market a popular item (Kindle @$139) for the holiday when it is in fact, according to the site,notavailable; when you try to order it, they tell you they will put you on a waiting list, but you can buy the new Kindle ($189) and have it delivered tomorrow.

Shame, shame!