Yep, amazon.ca exists and so does amazon.fr but,
1) What countries do you offer Web services for?
Currently we offer Web servcies for Amazon.com, Amazon.co.uk, Amazon.de, and Amazon.co.jp. You can find out more about these countries' Web services in our SDK. We will be adding other country sites to the platform in the future.
Without AWS for Canada, we are unable to directly access the Canadian data feeds.
1) What is Amazon Web Services?
Web services are self-contained functions that can be published and invoked across the Web using XML-based protocols. Amazon Web Services (AWS) offers applications that range from retrieving information about a set of products to adding an item to a shopping cart to checking on the status of a transaction. You can access Amazon Web Services through a REST (also called "XML over HTTP" or "XML/HTTP") or a SOAP interface. Both of these methods return structured data (product name, manufacturer, price, etc.) about top-selling products at Amazon.com (US), Amazon.co.uk (United Kingdom), Amazon.de (Germany), or Amazon.co.jp (Japan) based on parameters such as keyword search terms and browse nodes.
Sorry, but Amazon has no immediate plans to provide it - NukeAmazon just uses the feeds made available by Amazon.com.