The unstated implicit assumption in the question being asked in both situations is this: you’re being asked for your unbiased opinion. All ads are inherently bi

The unstated implicit assumption in the question being asked in both situations is this: you’re being asked for your unbiased opinion. All ads are inherently biased, but by not disclosing your compensation, you’re not answering the question as asked. This bias, even if disclosed, renders your recommendation, and our hypothetical innocent recommendation, suspect.