Do you love to travel? Do you carry a huge balance? Do you enjoy earning cash back on everything you purchase? There's a credit card for that. Actually, many, many, many of them. If you have a mailing address, you're well aware that you have options galore when choosing the right credit card for you. Out of all the credit cards out there, here are the three most commonly used credit cards in the United States, based on consumers' search patterns and the number of applications.