The document discusses various themes and approaches that can be used in advertising campaigns, including rational creative approaches, emotional creative approaches, and using endorsers. It outlines factors that influence whether using an endorser will be effective or ineffective for a brand, such as ensuring proper positioning so the endorser's values align with the brand, avoiding overexposure of the endorser, and making sure the product delivers on expectations. Key factors that contribute to the success of celebrity endorsements include creating a strong connection between the traits of the endorser and the brand values.