> As the authenticator would essentially need to maintain a list of verified providers, you would have to do a lot of work to figure out which providers are leg

> As the authenticator would essentially need to maintain a list of verified providers, you would have to do a lot of work to figure out which providers are legit and which are fraudulent. If payment is proportional to usage, then a linkbait/clickbait scheme won't work. The point is to reward genuine repeat visits to a site you like. If the profit is too low, fraudsters simply go elsewhere.