If u are in the "Chat Banned" group, that means you cannot access the chatbox, it's not visible to you. You will be added to this group if you have scammed, being disrespectful, etc.
You may get banned from the whole site depending on the situation. A member, imere, isn't banned from the site since we haven't got a chance to talk to him yet.
He is added to the Chat Banned group from now on, until he shows up and proves nothing happened and he will go back to normal status.