I am running a large scale global display campaign on Google. I get a large volume of registrations, but also an almost equal number of view through conversions. I'd like to understand the value of the viewthrough conversions so that I can increase my bid appropriately for the click track conversions. On Facebook, I could set up a 2 Lookalike audiences and then run a campaign against each of them, with each campaign excluding the other's audience. Run one campaign with regular ads, and one with a dummy public service announcement kind of ad,then measure the difference in view through on each campaign to ascertain the lift. I can't do the audience subtraction of Similar audiences on Google. Any suggestions as the best way to set this up?
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