A new policy being used by at least one major credit card company judges a shopper not necessarily by his credit purchases and payments alone, but also by the fiscal behavior of the fellow shoppers in the stores he visits.
And in some cases, the bad repayment history of the guy behind you in line at your local megastore could result in a reduction of your credit line, which, in turn, could lead to a reduction in your credit score -- all because of where you shopped.
Kevin Johnson, 29, of Atlanta, says he got caught in such a financial headlock.
Johnson is, by all accounts, the type of customer most credit card companies want.
He runs his own public relations firm in downtown Atlanta. He owns his own condo in a nearby neighborhood. And he knows how to manage credit wisely.
"My dad worked in the credit industry. So talking about finances was a common thing in our household," Johnson said. "I learned from an early age not to abuse that type of access to money."
Johnson says because of his father's lessons, he scrupulously maintained his credit since college. He says he has never had a late payment, rarely carries a balance on his credit cards and has never been over his credit limit. His FICO score -- the standard credit rating used by most lenders to determine credit worthiness -- is a 764 out of 850. A score of more than 740 is considered by most experts to be excellent.
Two years ago Johnson says he jumped at the chance to open a "blue" personal credit card with American Express. He says he considered the card prestigious.
"They have a wonderful rewards program, where I can get a lot for my money," he said.
In order to earn the most rewards points, Johnson says he used his American Express card as his primary payment method when he went out to dinner, bought groceries or filled up his gas tank. In the fall, he even used the card to purchase airline tickets for a Jamaican honeymoon with his new wife, Deidre. They left for the trip in October.
But while Johnson and his new bride were sunning on the beach, a dark cloud was hanging over their mailbox. When the couple returned home, Johnson says he discovered a letter from American Express lowering his credit limit from $10,800 to $3,800.
Johnson says his jaw dropped when he read one of the reasons American Express gave for lowering his credit limit: "Other customers who have used their card at establishments where you recently shopped have a poor repayment history with American Express."
"I think offended is an understatement," Johnson said of his reaction. "It was more like completely disgusted, offended, appalled. And I didn't know what to do."
"They've crossed the ethical line in terms of looking at where you're spending your money and making a judgement about whether that's a good or bad decision for you to make given these financial times," Robert Manning, the director of the Center for Consumer Financial Services at the Rochester Institute of Technology, told ABC News' Chris Cuomo on "Good Morning America."
Manning, the author of the book "Credit Card Nation," says Johnson was the victim of a relatively new credit scoring process being used by credit card companies.