The Fair Isaac Corporation devised a rating system that most lenders use to determine your credit worthiness. Your FICO score, as the rating is known, ranges from 300 to 850 points. The higher your points, the more willing institutions are to extend you a credit line. Besides, when your credit score is above 700, you receive lower interest rates on loans, pay lower utility deposits and are more likely to get approved for apartment rentals, for example....