1704 Tiny transactions for your credit card

On my way to the coffee shop this morning I heard an ad by American Express for using its credit card--saline solution (one cheery voice), pack of gum (another voice), groceries (yet another voice). I was shocked. Couldn't imagine asking people to make such poor credit choices. Then I read in today's Wall Street Journal that credit card companies are in fact going after our loose change. Even parking meters and juke boxes will now accept credit cards. I've never paid a credit card fee--never have had a balance to carry over.