The Amazon products API keeps changing it's name, and has just been 
changed to Amazon "Product Advertising API" -- it's the one you use to 
look up books in Amazon and get metadata for them, though.

It looks from an email I got from Amazon that ss of August 15th, you'll 
need to cryptographically sign requests to this API, to have them 
responded to. It looks like kind of a pain.

I think a bunch of people on this list may be using this API. Beware. 
Instructions for how to cryptographically sign requests the way they 
want can be found here:

http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/Query_QueryAuth.html
http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/rest-signature.html



Like I said, it's looking like a pain to me. There are lots of details 
to get right. If you URI-escape not _exactly_ the same way they do, it's 
not going to work. Etc.

Jonathan