The document discusses strategies for measuring the ROI of marketing tactics and content, including: 1. Calculating the value of visitors, leads, and customers using metrics like conversion rates and customer lifetime value. 2. Measuring how user behaviors on a website like time on site correlate with conversion rates to determine the value of tactics that influence certain behaviors. 3. Closing the loop between online and offline data to directly attribute the impact of specific tactics on goals like lead generation or revenue.