Know that if the company doesn’t feel that it’s making enough money on your account to justify keeping it open, you could end up getting canceled. The logic behind that is that every card carries the threat of liability to its issuer, because any card can be compromised or stolen. So if you aren’t a profitable enough customer, you could lose your access to credit.

The way to avoid this is to use the card for things that you could pay cash for, like groceries and gas, pay it off each month, and get some reading glasses if needed so you don’t miss any fine print!