What ethical standards should marketers and advertisers be held to?

Recently, the Vetican issued an article which says ads should follow three moral principles - Truthfulness, Social Responsibility and Upholding Human Dignity. Generally, big companies never lie as they have to prove their points to various ad regulating bodies.Reviewing these ethical principles which are at the foundation of the guidelines often helps to clarify the issues involved in a given situation. The five principles, autonomy, justice, beneficence, nonmaleficence, and fidelity are each absolute truths in and of themselves. Ethics in advertising is important, because by acting ethically with their advertising, a company is being responsible towards the needs of the customer. ... Companies need to show they have morals when advertising to consumers, because that makes consumers' feel like the company cares about what they need