1. The document discusses the design of social sharing systems and provides principles for designing such systems based on an understanding of crowds and how people interact online. 2. A case study of SlideShare is presented which illustrates how it enables social sharing of digital presentations through tagging, popularity metrics, and participation features. 3. Attendees of the workshop are given a design exercise to conceptualize a new system for social sharing by considering an object for sharing, individual and social aspects, findability, and other design questions.