Do you buy web books off of Amazon?

I'm doing a little survey to see how many people actually buy web related books off of vendors such as Amazon.com? Do you go to the site already knowing what you are going to buy? Do you just browse until you see something you like?

Now, if you don't buy anything off of Amazon that is related to the web, do you know of any friends that do? Thank you for helping me out on this one, its greatly appreciated.