This may not be a very popular thing to do as I know a lot of people who have a stack of credit cards in their wallet so that when they buy something or dine in a restaurant, they can ask " Any card got any discount?" or simply just to figure which card would give the highest rebate on their purchases. Not that this is not a good thing, but it isn't really applicable to me because I don't spend much in the first place. I may consider starting to analyse which credit card offers the highest cashback/rebates if I'm expecting to buy a lot of stuff or spend a lot of money, but for now, one credit card works just fine for me. I'm have been crediting my salary into the UOB One account and using the UOB One credit card for the since I...