They don't offer an API for this cloud files service and the ToS clearly restricts it to personal use. They may be positioning it as a loss leader (or at least

They don't offer an API for this cloud files service and the ToS clearly restricts it to personal use. They may be positioning it as a loss leader (or at least with slimmer margins than S3 normally has) in order to drive sales to Amazon MP3 - or they may be doing deduplication internally to reduce costs. Whatever the case, the fact that Amazon can undercut S3's prices doesn't really say anything bad about S3 itself - it just means you've got to consider if you can beat Amazon Cloud Drive's pricing while still using S3 as a backend. Oh, and google docs has been offering storage for 25% of the Amazon Cloud Drive pricing for ages now. It's just as inconvenient to use for bulk storage or backups, of course.