World Optimization is improving the world at large.
This topic includes, but is not limited to, ethics and metaethics [e.g. 1, 2], ideas for how to improve the world [1, 2, 3], cause prioritization , coordination/cooperation [1, 2, 3, 4, 5], advice/models for people and groups trying to do good [1, 2, 3], the psychology of doing good .
Content which describes how the world is that directly bears upon choices one makes to optimize the world fall under this tag. Examples include discussion of the moral patienthood of different animals, the potential of human civilization, and the most effective interventions against a global health threat.
Some material has both immediate relevance to world optimization decisions but also can inform broader world models. This material might be included under both World Modeling tag and this tag.