If you are looking for a ruby gem to interact with S3, you may want to choose the S3 gem over the AWS::S3 gem.

The S3 gem seems to be under active development while the AWS::S3 gem gem seems to have gotten a little stale.

I mistakenly chose the AWS::S3 gem gem based on the number of downloads on rubygems.org but it was missing the ability to copy from one S3 bucket to another without having to move the files through my local machine. That will teach me for not reading the source code…