Amazon published a case study on Hanzo today, in which they describe our use of EC2, SQS and S3 to host Hanzoweb and our web archive, see here for more information:
Hanzo turned to Amazon Web Services as an all inclusive, web-scale solution for hosting, data processing and storage. They are currently using Amazon EC2 to host their website Hanzoweb.com and process their busy web crawlers and Amazon Simple Storage Service (S3) to store the endless web data they collect