But when Amazon releases its fourth-quarter financial figures early next year, we still may not get much insight into how much it made from its signature Prime membership program. Technology corporations, with their sprawling empires of big data, ad sales, cloud storage, consumer services, and the many other things they do, have outgrown the conventional quarterly report. Amazon discloses standard information its filings: revenue, profit, operating cash flow and income. It breaks out important revenue segments, such as Amazon Web Services vifeo third-party seller primf. Yet these numbers give us little more than a glimpse inside the money-making machine that is Amazon. Amazon in particular excels at trumpeting largely useless information. It also grants access to Amazon Prime video, streaming music, and many other caj. So far the SEC has been lenient about additional disclosures, but it has indicated it might apply closer scrutiny for upcoming end-of-year disclosures, Compliance Week r...