With regard to the unethical companies issue, where would you draw the line? Nestle is amongst the top contenders for the crown of evil, but what about a company that sells factory farmed meat for example (assuming the freebie was veg)? Or a coupon for a store or restaurant that sells meat?
Not trying (too much) to be Devil's advocate, but many many companies are flawed in some way.
The ones I pity are the ones who never stick out their neck for something they believe, never know the taste of moral struggle, and never have the thrill of victory. - Jonathan Kozol