Amazon XML - Cool Tools

I was browsing Hotscripts last night when I came across yet another cool little tool based on Amazon XML. Less than two years ago Amazon gave their XML interface a "soft launch" and the number of tools and scripts you can now get to interface with it is simply overwhelming. There are two plugins installed with this blog, both interfacing with ease with the XML stream. On other sites I've literally thrown in little bits and pieces that I've come across on my nocturnal meanderings across the web. In many ways Amazon has really revolutionised XML and web services by making a service that gives webmasters an incentive to program. I wonder whether the community as whole will benefit in the long term..