Cool URIs don't change
> Ending path-style support for existing buckets is more serious, because it breaks URLs for existing files
Amazon should take a look at this 1998 article. Written by some guy called Tim Berners-Lee. Is he still known in the web biz?
[snarking aside, Amazon's decision has also implications on privacy and censorship. It is quite easy to block access to e.g. unwantedpoliticalopinion.s3.amazonaws.com. But dropping all traffic to s3.amazonaws.com? The back lash will be rather huge.]