I have been running Interclick CPM on one of my sites and I have noticed that the CPM changes drastically with no visible changes that I can catch.
I have never seen CPM so low in my life. On 4/1 I gave it 350 impressions...
16 people clicked on the interstial and I only made .05
On a day last month, I served 228 impressions, with 0 clicks and made over $4.
Why is there such a drastic change on some days. Most of the days are 5 cent days...
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