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Wednesday, July 05, 2006

Shimon Sandler - Blog Archive - Pay-Per-Percentage vs. PPC:
"Microsoft Research is studying & developing advertising auction systems that are “highly robust to fraud”. One researcher has identified Pay-Per-Percentage as a viable alternative to PPC. This is when the advertiser pays-per-percentage of the impressions instead of a Pay-per-click model.

Pay-Per-Percentage is immune to both click fraud and impression fraud. The challenge is that the ads must be shown in a truly random way, across the percentage of impressions purchased. The paper describes prefix-match: which is a system that is similar to broad-match, “but more compatible with pay-per-percentage”..."

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