show me the web services money

This article at Web Services Journal is the first one I've seen mention the amount of money Amazon has made directly through their web services feature: Web Services as the Holy Grail? Here's the quote: "In 2002, Amazon generated about 6.2% of their revenues, or $246 million, by using Web services to become an e-commerce platform." The wording seems a little fishy to me, so I'm not sure how accurate it is. I haven't seen Amazon talk directly about profits via AWS before.