Bank makes rewards harder to earn with card changes

We've written recently about some tricky things credit card companies do that can whittle away at the value of your hard-earned rewards, and recent news reported in the Consumer Reports blog illustrates that banks are still trying -- and trying very hard, in some cases -- to keep you from getting those perks.

Consumer Reports says that Citigroup recently switched most holders of its Dividend Platinum Select MasterCard over to its Citi Dividend World MasterCard. One major difference between the two cards is that the Platinum Select offered 2% cash back in several commonly used retail categories like supermarkets, gas stations and drugstores. The World has a different rewards structure that puts the onus on the customer to keep earning their rewards.