The document discusses how brands are using social data and predictive analytics to gain insights about consumers. It explains that vast amounts of data are generated online every minute from social media and other sources. Companies like Walmart and Cisco are analyzing this data to predict trends and consumer behavior in order to personalize marketing and business strategies. The author advocates an approach called "Social Ethnography" where brands aggregate social data to identify themes, influencers, and make predictions about future consumer behaviors and trends to improve marketing, sales, and product development.