This document summarizes a seminar on social data and privacy. It discusses what social data is, where it comes from, and different types of social data like demographics, interests, actions, interactions, recency and frequency. Social data provides insights into customers, brands, and can be used to create relationships and graphs to better understand people. When modeled effectively at large scale, social data provides significant business value across marketing, sales, and other functions by enabling more precise targeting and a personalized customer experience.