The document discusses the differences between impressions and expressions in marketing. Impressions refer to metrics like clicks, views and shares that aim to raise awareness but may not reflect genuine engagement. Expressions refer to more meaningful interactions that indicate real support, like likes, comments and brand mentions created by users. The document provides examples of how activities can be done for impressions or expressions. It also shows how marketing can be measured by tracking impressions metrics like views and demographics, or expression metrics like fan growth, likes and comments over time. Expressions are considered more valuable as they represent real engagement rather than just awareness.