 It's a great way to rack up points and rewards in some cases, but Katherine Hamilton, who writes about this in the Wall Street Journal, says the biggest key is keeping up with the bills in the first place. Keeping up with your bill payments and knowing that you can pay off your credit card bill when you put a big payment on that bill. Otherwise, it can really add up fast. Hamilton adds that the points and rewards you may accumulate may not be enough to offset other credit card fees, but still it comes down to watching your cash flow.