Online forums engage community discussions by providing a platform for users to share ideas, ask questions, and offer support. These forums can foster a sense of belonging among participants with shared interests, thereby enhancing user interaction. By moderating discussions and encouraging respectful dialogue, forums create a welcoming environment that promotes knowledge sharing. Additionally, features such as threading, reputation systems, and user profiles encourage active participation. Ultimately, online forums serve as valuable resources for information, connection, and community building across diverse subjects and interests.