Linked Data Ventures is a graduate-level class that combines both practitioner perspectives and practical hands-on experience with Semantic Web technologies. (The Semantic Web is not a separate Web but an extension of the current one, in which information is given well-defined meaning, better enabling computers and people to work in cooperation.) Students will learn about the Semantic Web from executives and practitioners using Semantic Web technologies in their companies, and will learn how to use these technologies through lectures and hands-on labs. A semester-long team-based project will culminate in sustainable prototypes that could be freeware or have the potential to be commercialized in the future, and will serve as a good launching point for entering into the MIT 100k competition. At the end of the semester, each project team will do a business presentation in front of the whole class and a panel of outside experts and judges, as well as a technical presentation as the conclusion of the lab.