I only recently started using third party ad networks (after I got hit with "brand safety" and was trying anything!). My CPC is pretty good at the moment, and around 90% of ads served are Google so I figured it was time to play around with some settings again.
Does anyone have any recommendations on how to select / deselect ad networks? I could just go on RPM, but wondered if there was a better way.
Or should I just leave as it is all optimised already?!