Great article. Thanks for posting it. I don't know that much about it so I need all the ammo I can get.
It's not the $10 that concerns me. Its the principle. They can't just charge whatever they want.
Thanks
This happened to me at a local restaurant two weeks ago. The manager said that with his old computer system, debit cards will overbill by the amount of the tip that is paid out to the server in cash (has something to do with the way the tips are handled in-house on the system), but that when the actual paper receipt goes through the bank, your card will only be billed what was on the receipt. Said it was just the way the computer handles the transaction.
Sure enough, when the sale came through 2 days later, it was the exact amount on the receipt. The restaurant you went to might have a similar system. The manager I talked to sounded like I was the 50th person that day to call him. I felt really bad for him (but encouraged him to press his owner for a new system).