And just like with cash, if income from bartering results in taxable income, you may be required to make estimated tax payments (subject, of course, to the regular rules for making estimated payments).

FORBES: Taxes from A to Z: B Is For Barter

The Allied soldiers were not all heroes, of course: By December, there were an estimated 18, 000 U.S. Army deserters on the loose in the European theater, together with at least 10, 000 British.

WSJ: Book Review: The Guns at Last Light

Over the course of nine days, the pope gave 39 sermons attended by an estimated 11 million Poles.

WSJ: Book Review: Strange Rebels

In 2009 an estimated 20, 000 spectators watched 6, 000 swimmers brave the one-mile, open-water course.

BBC: Cumbria Great North Swim cancelled over safety fears