The document discusses various online marketing metrics like click-through rate (CTR), cost per mille (CPM), cost per click (CPC), and dwell rate. It explains that dwell rate measures how long users engage with an ad, and that interactive rich media ads have higher dwell rates than standard banners. The document also outlines case studies of successful online video and social media campaigns for brands like VW, Vodafone, and Sony. It emphasizes the importance of understanding consumer behavior and embracing new forms of word-of-mouth advertising through grassroots approaches.