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Why Fraudulent Ad Networks Continue to Thrive

Harvard Business Review

To see how the bad guys operate, we follow the money trail. In the display advertising world, advertisers pay by thousands of ad impressions, denoted CPM (cost per thousand). At an average CPM of $1, this budget buys 100 million ad impressions. They’re bots creating the appearance of an ad impression. million per month.

CPM 8
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Who Rules the Web Now?

Harvard Business Review

Adding a profile on Facebook has little to no impact on Facebook's operating costs. They're out to kill the cost-per-thousand or CPM-based ad sales model. As each of these companies expands its fixed-cost infrastructure, profits grow geometrically because the additional variable cost of adding each new user is near zero.

CPA 15