1) I think this is definitely the case, but with the broad group 90+% of the clicks turn out to be fraudulent in my experience. Unfortunately the advertising ne

1) I think this is definitely the case, but with the broad group 90+% of the clicks turn out to be fraudulent in my experience. Unfortunately the advertising networks have little incentive to fix it, but the current state is ripe for disruption. 2) As an advertiser I'd like to define the demographics in very simple terms of white-listing on the platform. Twitter doesn't need to find out who are cloud developers: I'll tell the 2-3 twitter accounts the target audience must be following, which I know for a fact makes the followers also cloud developers. I don't need YouTube to figure out who are astronomers: I'll tell the channels astronomers subscribe to etc.