Online casinos should adhere to several ethical guidelines in their advertising to promote responsible gaming and protect consumers. Firstly, advertisements should avoid targeting vulnerable populations, particularly minors, by ensuring that marketing content is not placed on platforms frequented by children. Additionally, claims about potential winnings must be truthful and not misleading, emphasizing the risks involved rather than solely highlighting success stories. Promoting responsible gambling practices is crucial; advertisements should include messages about setting limits, recognizing addiction signs, and providing resources for help.