I have plenty of things I could complain about Amazon over, I worked there a long time, but I've been using their webservices since the beginning and they usually give a year's+ heads-up over API changes and I've never seen less than months. Unless that's changed recently it seems unfair to call out.

Re: Anyone Have Perl Code for New Amazon API? [SOLVED] and follow-up may or may not be interesting though it doesn't use Net::Amazon, it shows some barebones handling of the webservice.