Due to Amazon's limitation of 100 buckets per account and the coupling between bucket name and CNAME, hosting files for our clients and supporting custom CNAMEs has not been possible for us. If we were to move to Google Storage, it would be.
Multipart uploads only sort-of address this. For one thing, the minimum "part" size is 5MB, so you can only resume at 5MB boundaries (or whatever part size you use). You also have to manage more state yourself.
http://code.google.com/apis/storage/docs/reference-uris.html
Due to Amazon's limitation of 100 buckets per account and the coupling between bucket name and CNAME, hosting files for our clients and supporting custom CNAMEs has not been possible for us. If we were to move to Google Storage, it would be.