The FTC Act strictly prohibits unfair or deceptive advertising in any medium. Advertising either through media or net must tell the truth and not mislead its consumers. A claim can be misleading if relevant information is left out or if the claim implies something that’s not true at all. As an example, a lease advertisement for an automobile that promotes “$0 Down” may be misleading if significant and undisclosed charges are due at lease signing. Furthermore, claims must be substantiated, especially when they concern health, safety, or performance. If your ad specifies a certain level of support for a claim – “tests show X” – you must have at least that level of support. Sellers are responsible for claims they make about their products and services. Third parties – such as advertising agencies or website designers and catalog marketers – also may be liable for making or disseminating deceptive representations if they participate in the preparation or distribution of the advertising, or know about the deceptive claims of the seller.
(Source:FTC.gov)
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