Content moderation, in the context of websites that facilitate user-generated content, is the systematic process of identifying, reducing, or removing user contributions that are irrelevant, obscene, illegal, harmful, or insulting. This process may involve either direct removal of problematic content or the application of warning labels to flagged material. As an alternative approach, platforms may enable users to independently block and filter content based on their preferences. This practice operates within the broader domain of trust and safety frameworks.