The document discusses metrics and measurement for social media return on investment (ROI). It notes the challenges in measuring social versus traditional media. Quantitative metrics include leads, sales, and costs. Qualitative metrics involve authority, loyalty, and intangible benefits. Case studies show how SeaWorld measured a coaster campaign ROI through links and visitors. Southwest Airlines attributes $1 million in additional ticket sales to Twitter. Marriott credits $5 million in bookings to their blog. The document advises determining valuable metrics and reporting them clearly to demonstrate social media value.