This document discusses legal risks for online advertisers, affiliates, and networks related to deceptive advertising claims and government investigations. It provides tips to avoid investigations and outlines principles from the FTC regarding negative option marketing and endorsements. Specifically, it advises disclosing material terms and obtaining affirmative consent from consumers. It also warns against false celebrity endorsements or claims without substantiation. Lastly, it notes that advertisers, affiliates, ad networks, and others involved in online marketing can potentially face liability for deceptive practices.