You want to avoid abandoned shopping carts. (Photo via LookAfterYourself) My book Take My Money: Accepting Payments on the Web is about — wait for it — accepting payments on the web. Although the thrust of the book is dealing with all the complexity of managing money, we do talk about the user experience of interacting with a payment process. Specifically, the book shows how to set up a shopping cart for users to hold on to items they want to buy. However, in the book’s implemen...