Damn! today my report makes me shock with the CTR and PageImpression figures. Page Impression doubled and CTR tripple, however, earning is lower than average and so is CPM. Is this the symptom of click bomb? bcoz yesterday I banned a member from accessing my forum due to violating forum TOS.
Could be, do you usually have a good number of impressions? I mean there is a difference between 5 impressions doubling to 10 and 1 click tripling to 3 etc. I'd suggest you try and see in your stats where the extra traffic is comming from, and perhaps contact google.
I will shoot G an email explain the situation. My Page Impress does not fluctuate that much, it is rather quite stable and does not change that dramatically. Neither the CTR and CPM.