For the well organized borrower, credit card penalties might be a subject of little interest. However most of us get hit from time to time with one or another of the multitude of penalties credit card issuers can levy.
There is a reason for this. The credit card companies rake in a lot of extra income by invoking these penalties. If it seems that they are becoming more common, it is because they are, with the lenders tinkering with the rules frequently to try catching you in their trap.
The main credit card penalty that seems to hit everyone from time to time is the late fee.
One of the lenders' games has been to change the address the payment is to be mailed to periodically, hoping the customers won