This is a definite issue for web developers such as ourselves however for people who have a substantial amount of traffic coming in every day a few clicks from the same IP simply would not make a difference.

I believe that in order to stay in googles good books you are recommended to keep CTR to at least 5 but with exceptions to 10. However any higher and bells start to ring.

But this is definitely quite an issue and google should definitely give the adsense person a fair chance to excuse himself.

I haven't known google for its good support and contact methods, its more of a self explanatory service.

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