As you may know, iTunes has a potentially evil feature, the Wish List. Evil, you say? Whatever do you mean? I don’t use the iTunes Wish List feature, but if you were to take a look at my wish list at amazon.com (40+ pages; I kid you not), you’d see just how evil the whole concept is!!
My books addiction notwithstanding, Kirk McElhearn provides a pretty good overview of features and pros and cons of the iTunes Wish List. PYBT: How to use the iTunes Wish List.