I'm thinking in terms of a middleman who can aggregate * people (and maybe their ISPs) who will pay to avoid adverts; and * publishers and ad networks which

I'm thinking in terms of a middleman who can aggregate * people (and maybe their ISPs) who will pay to avoid adverts; and * publishers and ad networks which show paid advertising Having to separately opt-out of seeing adverts on every ad-supported site is too much hassle and the financial overheads would be prohibitive. It needs to be aggregated. The technical side could be implemented using ad blocking software (with block lists provided by the publishers), but the publishers would be fairly compensated.