As noted by Mommy Points, United is offering 500 free MileagePlus miles just to sign up for their dining program. Like Summer, I really can’t remember the last time one of the airlines offered a sign-up bonus without tying it to completing your first dine as part of the program. That really means these are just free miles. That being said, I think the dining programs are a good (not great) part of any mileage earning strategy. The bonuses used to be much more lucrative, but enrolling is free and listing […]