I honestly did not expect this thread to get so interesting. A very interesting question that after 5 pages I am still certain I do not know how I feel about it. In the first two pages, I was unsure, but leaned towards it being stealing. These bags are here for an implied purpose: to carry your produce to your home. Yes, they are offered free of charge - but free of charge for that purpose. When FG discovered they were provided free to the supermarket because the manufacturer of these bags advertise on them, a very significant point changed for me. As soon as something is an ad, its primary purpose becomes exposure and distribution. The ads are on free plastic bags precisely because they have value to FG (dog poop, garbage bag, etc) as well as the manufacturer (you carry it around, hang them up in your kitchen, etc). To me, the implied purpose is much more than just carrying the broccoli to your car now.