My Discover Card has been an excellent source for building/repairing my credit. I have never had any problems with customer support. They have been well versed in every question or problem that I have ever had. It is used most places that I have frequented.  The cash back bonus is a great incentive. Who does not spend money? Who does not want to get paid for spending money? Let's be realistic about this; If you pay your bill on time and pay all or most of it off monthly you are making money. Who would not want that? This card has helped me to repair some of the damage that my previous marriage,...