You could make a full-time job out of keeping up with frequent-flyer and hotel/motel discounts. Look into an eight-page monthly newsletter called Travel Smart for Business, and maybe you won't have to.
Travel Smart alerts you to the latest air, hotel, and rental-car rates in the United States and around the world. It also includes safety tips, currency statistics, valuable information about the circus-like airline industry, and city reports on hotels, restaurants, tours, museums, and clubs worth checking out. One recent issue reported on the likelihood of your being involuntarily bumped, airline by airline. (The odds range from 0.1 passengers for every 10,000 booked on American Airlines to 17.2 on Pan Am.)
For more on Travel Smart, write Communications House Inc., 40 Beechdale Road, Dobbs Ferry, NY 10522. It costs $125 per year.