As you fill up your gas tank this summer, watch out for credit/debit card skimmers at gas stations. A skimmer is a small device that a thief can install where you swipe you card at a gas pump. The skimmer can gather all of your card information. Over the last couple weeks, Secret Service agents went looking for the devices in 21 states. They recovered 59 skimmers from 85 locations nationwide. Experts say the best way to avoid being skimmed is by paying inside the gas station with your card or even better, with cash. Have you ever been the victim of skimming?