Online forums are digital platforms where individuals can engage in discussions, share information, and connect with others who have similar interests. These forums often consist of various threads, allowing users to post questions, answers, and comments on a wide range of topics, from hobbies to professional advice. The structure of online forums typically includes categories and subcategories, making it easy for users to navigate and find relevant discussions. Popular examples of online forums include Reddit and Stack Overflow, which cater to diverse communities and provide valuable resources for users seeking knowledge and support.