I have been with Delta for almost three years now and I cannot say that it was a pleasant ride. Even though I did manage to get two free tickets (business class, though) I still do not believe that much in their free miles program. So, I am thinking about changing the airline, but I would still need an answer to the next question - anybody with a good miles - earning idea?
Well, I guess that the first advice would be not to change the airline, but I assume you have already made up your mind on that. I suppose that the best advice for you would be to get yourself familiar with what that airlines miles program is offering, always watch for special promotions. Always keep the track of your miles, if you have missed elite status for a couple of miles, the tactic I advise would be- call and beg (they do give e. status sometimes for people who missed it by a bit).