Since many of you frequently fly out of the country or do international MRs, do you take advantage of the dutyfree shops and purchase cigarettes at a discount for friends or family members? That's probably the only substantial discounted item I see buying in dutyfree shops.

I don't smoke and definitely do not encourage people to, but I have friends who do smoke and I am often asked to buy cigarettes for them when I travel internationally. When I do, my friends get discounted cigarettes while I rack up some extra miles (albeit very few) on my miles earning credit cards.

I guess the more general question is: what is the least amount of miles you'll spend your time and energy to get?