In 2006 SmugMug.com used Amazon S3 Web Service to save $48,490 / month... ($500K) on their business costs.
...and they expect their savings from Amazon S3 to be well over $1M in 2007, maybe as high as $2M.
So who are SmugMug.com ?
Well, they are a rapidly growing business who provide a "storage service" for customers to store their photos securely, both home users and pro's.
Here are a couple of great quotes from the CEO's blog: