Ford Motor, PepsiCo, and Southwest Airlines, for instance, analyze consumer postings about them on social-media sites such as Facebook and Twitter to gauge the immediate impact of their marketing campaigns and to understand how consumer sentiment about their brands is changing.Source: McKinsey, August 2010 https://www.mckinseyquarterly.com/High_Tech/Strategy_Analysis/Clouds_big_data_and_smart_asse