Hidden Cities and Point Beyond (basically the same):

Let's say you want to go on a route the Continental has a monopoly on from their hub, such as SAN-EWR. The fare for R/T is $450. But, if you fly SAN-EWR-BOS, the fare is $350. You buy the ticket to Boston, but get off the place in Newark. You have to carry on all of your luggage. You make up some excuse on why you don't go to Boston so they don't cancel the rest of your trip.

Throwaway Ticketing:
You want to go one-way anywhere, say you are moving from Los Angeles to New York (LAX-EWR). The one-way fare is $900+. The roundtrip fare is $350. You buy the roundtrip, and don't use the second flight coupon, essentially "throwing" it away.

I am not a good expainer of back-to-back. It is used to escape high midweek fare w/o a Saturday nite stay.

[This message has been edited by Tute84 (edited 02-01-2000).]