Newsgroups are online discussion forums that allow users to post and read messages on various topics. They operate using the Usenet system, which was established in the early 1980s. Each newsgroup focuses on a specific subject, ranging from technology to hobbies, enabling users to share information and engage in conversations. Users can access newsgroups through newsreader software or web-based interfaces. Messages are organized in a threaded format, making it easy to follow discussions. While their popularity has declined with the rise of social media, newsgroups still serve as a valuable resource for niche communities and specialized interests.