Not sure about you, but I have been in credit card debt before.  I have been there when you have no money but you do have a credit card, so you just put that meal on the already over spent credit card.  And what you get it paying over DOUBLE for that meal.  The best part about what you spend is below:

a $7 tip, because you want to impress the waitress or your buddies, and you over $8 more than the original $7.  If this doesn’t make you say wow, nothing will.  In these hard economic times, do what you can to get off of credit cards.  They will destroy you if you are not careful. Check out the site and put your numbers in.  It will make you wonder.

The Real Damage

Original Story: The Real Damage Calculates the True Cost of a New Purchase on Your Credit Card [LifeHacker]