Many of the claims of the patent have been overturned. The interesting part is the legal way that this was accomplished. Instead of using lawyers, the person responsible here (who was mad at amazon for slow deliveries of a book) paid for the USPTO to reexamine the patent with new evidence of prior art submitted. Here is the post of the person claiming victory over amazon:
http://igdmlgd.blogspot.com/2007/10/amazon-one-click-patent-...