Communicating false information that harms the reputation of an individual or entity creates legal liability for the injuries incurred. Defamation is handled very differently, however, in America than overseas, particularly when the offending communication is networked. As a robotic future becomes increasingly present, the way in which legal systems will respond when robots lie presents a pressing social question. This article provides a background of the subject, compares various defamation laws, and lays forth a set of important questions that will need answers and hinge on the design and capability of robotic systems.