Some people will do just about anything to save money.And I am one of them.Take my family´s last vacation.It was my six-year-old son´s winter break from school,and we were heading home from Fort Lauderdale after a weeklong trip.The flight was overbooked,and Delta,the airline,offered us $400 per person in credits to give up our seats and leave the next day.I had meetings in New York,so I had to get back.But that didn´t mean my husband and my son couldn´t stay.I took my nine-month-old and took off