Content moderation is one of the most important and potentially time-consuming aspects of managing a social application. For efficiency and consistency, you must assemble people, processes, and software into a content moderation system. Start by taking a clear position on the main tensions in any social strategy, such as whether to moderate content quickly or carefully. Then, design your system around your position. In particular, decide whether employees, volunteers, or vendors will moderate your application, and how you'll measure and manage their work. In time, moderation systems will merge with community engagement and content management.