Simply put, chat is the ability to exchange text messages in real time. From the emails it is different because you can immediately see the phrase you wrote your partner. Text chat may imply communication, even between a large number of users. Usually is used to exchange short, quick phrases. Such chats can be embedded into a website on a specific topic (e.g. fishing) and are used to exchange experiences and news. However, the chat rooms are closed.In order to access this chat, you need to obtain special rights or invitation from users. All these restrictions set by the site Creator or administrators (moderators). From the forums the chat is characterized in that, as a rule, does not have a specific theme and is often used for simple “chatter”.