How funny! I love the title of your post.
I used to use the shopping cart like a wish list, putting things in and leaving them there after I left the site. Zappos would send me an email saying, hey, what about us here, in your shopping cart? Did you forget us? I found it amusing.
I like the wishlist option, because so I often find my desire for a particular item is quite fleeting. I have much more willpower with online shopping than I do in person. If I'm trying to watch my spending, I just really have to stay out of the stores. The other day, I came home with a pair of sandals after going into a cool shoe store that I hadn't visited for a long time. Did I need (another pair of) sandals? In Seattle?? I do love them, and I'm hoping we'll have at least a few days that I can wear them this year.