Rules of behaviour [chat room ]

Chat rooms usually have stringent rules that they require users to follow in order to maintain integrity and safety for their users. Particularly in rooms for children, rules usually do not allow users to use offensive language, or to promote hate mail, violence and other negative issues. Also chat rooms often do not allow advertising in their rooms or flooding, which is continually filling the screen with repetitive text. Typing with caps lock on is usually considered shouting and is discouraged. Chat rooms usually have a list of rules for users to obey when they chat online though they are not usually kept.
Sometimes chat room venues are moderated either by limiting who is allowed to speak (not common), or by having moderation volunteers patrol the venue watching for disruptive or otherwise undesirable behaviour.
Yet, most commonly chat rooms are not moderated and users may type what they personally choose to send.
Reference : http://www.uthaisak.net/wikipedia.htm