Got a call telling us that we had won a fabulous 5 day vacation from Disney. Said that I had applied for the trip.  I couldn't remember doing such a thing.  All we had to do was pay a registration fee (somewhere around $250) and give them our Visa card number to charge it to.  The caller was very professional sounding and could easily have duped someone not understanding what was going on.  We kind of strung her along and eventually hung up.  After every exciting aspect of the trip, her line was, "And what is the expiry date of your credit card?"  Be careful out there!