As the country's tough economic times and the holiday season are now overlapping, consumers are looking for every way to save money this December. Beginning today, Kim Danger, founder of Mommysavers.com, is offering consumers several tips in a "Savvy Savings" series, sponsored by Sprint. Over the next few weeks, Kim will explain ways to shave dollars off budgets by becoming more energy efficient, managing credit-card purchases, making the best use of coupons and rebates, and researching long-term contracts -such as mobile-phone bills.