Shimon Sandler

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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  1. Sure, it would prevent fraud–but it would also prevent performance. This sounds too much like CPM, and there is a reason advertisers (like myself) hate CPM and publishers (like myself) love CPM. There is no incentive to perform on any side, as there is with CPC.

  2. It sounds silly to me. Impressions are easier to fake. The trick to this is that if you’re paying for a % of impressions across many websites, it will be nearly impossibly to know who is inflating pageviews w/ fake impressions. At least w/ PPC you know who sent the click. The other problem w/ paying for impressions: we’ll see a million more “Next” links that were never necessary before.

  3. I recently posted similar views on my blog. I’m in favour of CPA/PPP, however, there are inherent risks associated with distributed ads in this way. Three entries of mine highlight this:

  4. interesting find. cant say yet whether this concept will be favourable among advertisers. if history repeats itself, any product msft launches via adcenter or in the online media space is likely to bomb.


  1. [...] Bill Slawski at the Search Engine Watch blog (via Shimon Sandler) points to a Microsoft paper about a newly proposed performance-based ad model “per-per-percentage” (PPP) — the latest in a series to take on “click fraud.” It’s an interesting model whose reason-for-being is to minimize or eliminate click and impression fraud. Slawski explains and quotes from the MSFT paper on how it would potentially work: What does pay-per-impressions mean? Simply, someone can can for a percentage of all impressions for certain keywords or keyword phrases over a period of time. [...]

  2. [...] Per quanto riguarda Microsoft, dalle parti di Redmond, il colosso informatico sta studiando un nuovo sistema pubblicitario, Pay Per Percentage, per evitare il problema dei click fraudolenti. Qui trovate il PDF. [...]

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