This is why I'm looking at alternative computing models to deploy my engines on. I think I'd break S3 very fast. Need a better cloud. Is App Engine the answer? Not sure. Maybe talk to David Sabey, Bob Franza, and Craig McCaw's people about it. - Brian Daniel Eisenberg
We were having this exact discussion at CloudCamp London last week. How do ensure that you have (cheap) redundancy across clouds given that most cloud computing platforms are currently incompatible and based on radically different models. Sadly AWS's european MD hand-waved when I asked about the possibility of cloning their APIs - Adewale Oshineye
Cloud Computing removes the single point of failure but if the single point of your system is Amazon S3 it's still a single point of failure.. - Stuart Woodward