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NEW YORK A Google report on click-auditing firms claims that even leading auditors suffer from basic engineering flaws and bad methodology that significantly increase their estimates of click fraud.
According to the report, click-auditing systems often record “fictitious clicks” due to page refreshes and sometimes count clicks to other search engines. Due to such “basic engineering and accounting issues,” Google said published estimates of click fraud by these firms are “invalid” due to “faulty data.”
The report focuses on three firms: ClickFacts, Click Forensics and AdWatcher.
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