The document discusses 5 key lessons for effective marketing campaigns based on a study of 880 campaigns. The lessons are: 1) Fame strategies that get a brand talked about deliver better results than rational persuasion strategies. 2) Using multiple media channels together leads to greater effectiveness than single channels alone. 3) Increasing awareness is less important than increasing a brand's saliency and likability. 4) Television remains very effective for conveying emotions, which influence decisions. 5) Direct mail must be tailored to the audience's stage in the purchase funnel, using emotional strategies for passive audiences and informational strategies for active audiences.