Calculations based on cost per sale (CPS). Only pay for actual sales. Free traffic and 100% performance based. But is this really the Holy Grail? I believe that alternative accounting models, such as cost per lead, often result in much better and longer-term results. And I'm not the only one who thinks this; this year, Rabo Mobiel's online marketing manager, Annette Vendel, halted all CPS campaigns via affiliate networks: "At Rabo Mobiel, we want to be fully aware of what publishers are doing with our displays and brand messaging. With affiliate marketing this is difficult; the risk of reputation damage is higher than any benefits. Sales percentages which also had to be adjusted due to double counts, credit checks etcetera were too high to make this really profitable. "