I see the examples for Amazon s3 in Salesforce, and see the value of adding storage to Salesforce via Amazon however can someone point me to docs or examples of what the benefits is to linking Salesforce is with ec2 is?  I see they have an AMI for PHP but we don't use PHP.  What connections am I making here that are so special?  The one example I see shows a tab of my instances, that isn't useful in anyway really. 

Any direction would be helpful.