Djlawman, thanks for the posts. I will read them in more detail later, and more of my comments may follow. I have a question regarding antitrust as it relates to frequent flier programs. Some frequent flier changes by the airlines seem to stick. For example it seemed like last time all the airlines (except TWA) decided that it was time to raise mileage award levels. Or they all decided to do away with plateau/threshhold bonuses. Some of these do not stick - as an example United's decision to require 14 day advance with Sat night stay for FF tickets. Do the airlines test beforehand which way the winds are blowing?