CPC and CPM ads for forums

which to better plan for?

[sallam]

I used to display adsense in my forum for everyone. Then I realised that member hardly click ads, so I started displaying them only for guests, which increased my CTR from 0.3 to 6.0
This resulted in much better price per click and eCPM.

But what about CPM ads? specially now with the new onsite advertisers CPM ads, do I need to go back to displaying adsense to everyone again? My members' page views are 6 times that of guests. So, I would be losing CPM revenue if I kept viewing adsense only for members, right?
Or will this harm my revenues, by lowering my cpc rates again? (because members almost never click ads)

[sallam]

anyone?

[roycerus]

I have the same question but let me extend it a bit further. What decides the CPM cost per thousand impressions? Is it your current ECPM?

This is an important question cause if the CPM is depandent on the ECPM then it would make sense not to show ads to members - since the ecpm will drop.

[GoldenHammer]

Quoted:
===
I used to display adsense in my forum for everyone. Then I realised that member hardly click ads, so I started displaying them only for guests, which increased my CTR from 0.3 to 6.0
This resulted in much better price per click and eCPM.
===

That would have a better eCPM and CTR, but do you get better overall earnings from the forum?

[sallam]

yes, almost 3 times as much. I've also optimized ad placement, so both factors helped.
So whats best for the coming site-tergetted CPM ads, display for all, and sacrifice the high CTR and eCPM?

[arubicus]

"So whats best for the coming site-tergetted CPM ads, display for all, and sacrifice the high CTR and eCPM?"

You know it will come down to what works best for you. Just test test test.