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Four Pillars Of Profit-Driven Marketing Princeton Review Spices are celebrated the worldEach year, billions of dollars are spent on marketing endeavors. Unfortunately, the vast majority of the money disappears into thin air, and marketing executives are left wondering if any of it came back in the form of ROI. Why? Because until now there has been no proven system for measuring marketing ROI. But as budgets tighten, marketing managers are feeling the pressure to come up with quantifiable results for every dollar spent. The ability to