Remember that old saying "Do right by a customer and they'll tell a friend. Do wrong and they'll tell 100 people."? Well, in today's social media world there seems to be a 1000x multiplier.
Case in point, professional musician David Caroll had a guitar broken by an airline baggage handler (witnessed by everyone on his side of the flight) a year ago. 9 months of back in forth with the airline resulted in no help. All other courses of action stripped away, David took to YouTube to air his grievances via a music video.