1. Try charging some of your monthly bills to your credit card (cell phone, security system, car loan, etc)....this will enable you to get more miles.

2. Signup for the Hilton CNTU promo. Do 4 stays in 90 days and you get 50K points. Goto the hilton board for more details.

3. Switch your long distance carriers every 6-12 months to take advantage of the bonuses they offer.

4. Switch your credit cards every year or so to take advantage of sign up bonuses (CO currently has a 10K bonus + double onepass miles)