There is no confusion as to what they are doing. That does not mean that there isn't any moral ambiguity. What they are doing is akin to a racket protection. T

There is no confusion as to what they are doing. That does not mean that there isn't any moral ambiguity. What they are doing is akin to a racket protection. They place themselves in the position of deciding whether some ads are authorized or not, and of course some money can push them in the good direction. The only ambiguity here is that they seem to at least respect a standard for the ads they accept. Beside that, this is racket and corruption.