theodp writes: With Is Advertising Morally Justifiable?, philosopher Thomas Wells is out to change the way you think about Google and its ilk. Wells says: "Advertising is a natural resource extraction industry, like a fishery. Its business is the harvest and sale of human attention. We are the fish and we are not consulted. Two problems result from this. The solution to both requires legal recognition of the property rights of human beings over our attention. First, advertising imposes costs on individuals without permission or compensation. It extracts our precious attention and emits toxic by-products, such as the sale of our personal information to dodgy third parties. Second, you may have noticed that the world's fisheries are not in great shape. They are a standard example for explaining the theoretical concept of a tragedy of the commons, where rational maximising behaviour by individual harvesters leads to the unsustainable overexploitation of a resource. Expensively trained human attention is the fuel of twenty-first century capitalism. We are allowing a single industry to slash and burn vast amounts of this productive resource in search of a quick buck."