One of our clients has a large distrust of Google pay-per-click. They feel that a vast majority of the ad clicks are fake. Essentially, they don't trust Google at all.
Is there a reputable click fraud service or pay-per-click audit service that large pay-per-click advertisers use to ensure their ad clicks are real. Are there one or two industry leaders that many large advertisers and agencies just use as standard practice to monitor click fraud.
Thanks in advance for your help.