When a chat room indicates that it is live on its website, it means that users from all over the world can connect and begin chatting with each other. A chat room that is not currently live typically has some type of notification that prevents users from connecting, such as a broken link, a redirection or a message on its website that indicates that the chat room is currently not live.
A chat room is one of the many ways for users to connect with one another through the online medium and talk about anything or a specific topic, like on a forum. Chat room are different from forums because they allow users to speak to each other in real-time, rather than by using a post system. Many chat rooms require a simple Internet connection and function through a direct connecting client, such as IRC or some other chat program. Most chat room are free to join, and some require a login so that users can build and return to an identity in the room, though there are also anonymous chat rooms that allow users to change their nickname quickly without signing in, though there are usually security issues with this system.
Sometimes chat rooms are organized by moderators who make sure that no rules are broken during the chat sessions.