Arthur Fellow in the Accounting and Management unit at Harvard Business School, where he studies the political economy of corporate accountability and financial reporting.

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As the world's financial markets go electronic and information flies around the globe, the unit of accounting will, eventually, become a fraction of a day.

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Mobile phones are the major application for touch screens in terms of unit shipments, accounting for two-thirds of units shipped in 2010.

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PwC came to this conclusion after consulting with three of the other big accounting firms and each firm indicated that the unit didn't qualify for off-balance sheet treatment, the suit says.

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Viacom 's (nyse: VIAb - news - people ) Infinity unit is the next-biggest customer, accounting for 10% of revenue.

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It also points to its work for U.S. Foodservice, helping the unit of the disgraced Dutch grocery chain Royal Ahold overcome its accounting and legal headaches.

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Spitzer's case is focusing on a few arcane areas of accounting--including an allegedly bogus deal by AIG with General Re, a unit of Berkshire Hathaway, to bulk up AIG's balance sheet.

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PayPal unit, listed on its website that he had obtained a computer science degree in addition to an accounting degree.

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