Just like in real life, there are some things that you do and some things that you don't do and this also applies when in chatting. If you are new to chatting, reading the following will help you understand the unwritten rules or "etiquette" of chat and help you to communicate with others.
Don't talk in CAPITAL LETTERS
In a chatroom, using a lot of CAPITALS or UPPER CASE is seen as shouting. Many people find it annoying when a user types entirely in capitals.
Don't enter chatroom and then leave without saying something
It is considered impolite to enter a chatroom and then leave without saying something. Saying something like 'hello' is being polite.
Try to be patient and wait if a user is slow to respond to you during a conversation. Remember that this is a person and they may have other things to do at the same time.
Be friendly. Be polite. Be considerate
Remember that these are real people you are chatting with. They may have different opinions to you and come from very different cultures. Treat them properly and respect their opinions, and they will treat you the same.
Never give out your email addresses, phone numbers, ID's or similar to someone in public chat rooms! Giving out such details leaves you open to all types of possible trouble.