Everyone is entitled to a free copy of their credit report annually, so it's easy to keep track of whether you have any black marks on your credit that may affect your credit score. You can also pay the various credit bureaus to get a copy of your credit score. It's especially important to do this if you start encountering clues that your score is tanking. Loan Denial Say you want to buy a house or a car. You've got a good job, plenty of...