My question is - is huge ad unite using bad for CPM based ad networks CPM rates ? - for example my daily unique visitor 5k, so 5000 X 5 ad unite = 25k Impression other is 5000 X 3 ad unite = 15k Impression which is good for high CPM rates ? - is CPM rate depend in High or Low CTR % ? - any legend explain it i am confused about it.
Why would you put 5 ads on your page? CPM depends on a number of factors, depending on the campaign the company is running. You may need signups, sales or clicks.