The web should empower an equitable, informed and interconnected society. It has been, and should continue to be designed to enable communication and knowledge-sharing for everyone. In the 30 years since development of the web began, it has become clear that the web platform can often be used in ways that subvert that mission. Furthermore, web technologies can be used to cause harm, which is not in keeping with the spirit of this social mission. The web should be a platform that helps people and provides a net positive social benefit. As we continue to evolve the web platform, we must therefore consider the ethical implications of our work. The web must be for good.