Trained originally as a physical anthropologist, Post was one of the first, and remains one of the leading, Internet law scholars in the United States. He has been a member of the faculties of Columbia University (Department of Anthropology) and the law schools at Georgetown, George Mason, and Temple University (a position from which he recently retired), a practicing lawyer at the Washington DC law firm of Wilmer, Cutler & Pickering, and a law clerk for Supreme Court Justice Ruth Bader Ginsburg. He is the author of In Search of Jefferson's Moose: Notes on the State of Cyberspace (Oxford, 2009), a Jeffersonian perspective on Internet law and policy, and Cyberlaw: Problems of Policy and Jurisprudence in the Information Age (West, 2011) (with Paul Schiff Berman, Patricia Bellia, and Brett Frischmann), and numerous scholarly articles on intellectual property, the law of cyberspace, and complexity theory. His 1996 article "Law and Borders: The Rise of Law in Cyberspace," co-authored with David Johnson and published in the Stanford Law Review, is widely considered one of cyberspace law's foundational documents, and was recently identified as the 2d-most cited intellectual property law review article of all time. He is currently a Fellow at the Center for Democracy and Technology, an Adjunct Scholar at the Cato Institute, and a member of the Board of Trustees of the Nexa Center for Internet and Society.