<prompt> Human: Hello! I am wondering if there are any credit cards out there that help rack up frequent flyer miles without being a total scam. I understand that I may have to pay a fee to be part of the program, so what would be a reasonable fee to expect? And how about a reasonable interest rate? Ive only had one credit card, through the same bank since I was 16 and apparently my interest rate on that card is the lowest any banker has ever seen. I would appreciate some perspective! Thanks, as Happy New Year!  <response>: The best cards are typically those branded by the airline. However, beware that most of the time reward miles dont count towards actual airline status, and reward programs can be devalued by the airline basically at will. United recently announced major changes to their reward mile program that made a lot of people unhappy.And how about a reasonable interest rate?When used properly, i.e. you pay your bill off in full every month, interest rate is irrelevant. If you are planning on keeping a balance on your credit card you should probably not get one. 