 Using a credit card to pay your rent, to the surface it sounds like a neat, simple solution, but WTOP's Ian Crawford tells us there are some things to watch for. In the internet-minded 21st century, it's become very easy to pay your rent online with a credit card. 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.