1. The document discusses strategic uses of social media to promote brands and products through case studies of companies that successfully used platforms like Facebook, blogs, and online outreach. 2. One case study describes how a company used targeted Facebook posts to gain coverage in the New York Times, reaching millions of potential customers. 3. Another case study explains how a museum brought its educational mission online through an e-book and blogger preview event, engaging both virtual and real-world audiences as part of a larger advertising campaign.