The dangers of dynamic currency conversion

Processing a credit card charge for overseas purchases used to be pretty simple. You swiped your card while on vacation, your bank changed the money from pesos or euros into greenbacks, and the amount you’d spent appeared on your bill. Maybe you paid a small conversion fee, but you also got a competitive exchange rate.

A Sea Miles swindle? Carnival confuses “per cabin” with “per person”

Stuart Harstrom applied for a Carnival Sea Miles MasterCard in 2004 and used it for most of his purchases, hoping to redeem his points for a “free” vacation. Then the cruise line pulled the plug on his plans, he says. His story is a cautionary tale about vague promises made by loyalty programs, imprecise wording on Web sites, and the fleeting nature of points.

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