After sending them to friends, those photos then disappear, forever, in 1-10 seconds.

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Every time someone decides to stop receiving a paper bill, 24 pieces of First Class mail per year disappear forever (the bill, and the payment, each 12 times per year).

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Enron, on the other hand, may disappear forever as its collection of energy assets and trading contracts are gradually cleaned up and sold to others.

ECONOMIST: America's business recovery