Social media and other forms of data creation and manipulation are posing profound challenges to traditional legislative and regulatory arrangements. Issues ranging from privacy to equal access, from spectrum allocation to market concentration and from intellectual property to secrecy have become quite contentious due to power of digital technologies. Innovative services can collect data in ways that can have poorly understood ramifications. This course surveys the laws and regulations that apply to emerging media and probes the major policy issues in detail with a particular emphasis on the situation in the U.S.