Quote Originally Posted by mind View Post
I can assure that you having millions of impressions per day DOES NOTHING FOR YOU. My banners have slightly below industry standard performance (because the game is too addictive and users don't want to exit via a banner). I get the dregs of the ads. Like $0.30 eCPM and below for USA traffic on Admob. THAT is why they are last in my advert waterfall.

Ad companies only care about CTR and CPA. This is what they bill on. In order to reduce costs they will obviously send the highest paying inventory to the highest CTR/CPA properties. This brings in the most income 'right now'.
As you said, if your conversion rate is not good, then I would say that having millions of impressions is worthless. But this situation is different in other cases.