A Free Man is always referred to as Master and a Free Woman as Mistress. If a person is disguised or you cannot tell, use Master and then beg forgiveness for your mistake if reprimanded.
First, if you are with your Master, ask permission to greet. Do not speak until you have, unless he has given you a standing order that you do not have to ask permission to greet.
Second, never greet until you are on your knees. Greeting Free while standing gives them the impression you think you are of the same status as a slave, and you are not. This is a high insult to them.
Third, the order of greeting is important. You always greet your Master/Mistress first (Tal, my Master). Next are Masters (Tal, Masters), then Mistresses (Tal, Mistresses). Last you greet the other slaves (tal kajiri and kajirae). If you know the other slaves, then you may use brothers and sisters instead. A couple of other things to recognize when greeting:
a) Use capitals when greeting Free in SL. This gives an added level respect to them.
b) You may combine a greeting of Master and Mistress, such as Tal Masters and Mistresses. Do this only though if there are a lot of people around. This shortens the greeting process for all involved.
c) You never use titles or names when greeting, with the exception of the Ubar. So Tal, Master First Sword, or Tal, Master Matrix, is never acceptable. If you do need to indicate a particular Free, do the following…/me turns slightly to Master Matrix….”Tal, Master”.
d) If the Free are in a heated discussion, emote your greetings instead, as this is less interruptive to the conversation. So for example /me whispers softly…”Tal Masters and Mistresses”. If the conversation is heated do NOT greet the other slaves.
e) Be careful of greeting assassins. An assassin will emote being disguised and moving towards his victim. Though you can see this in SL, in character, you role play not seeing him. Greeting an assassin before he has revealed himself can result in death for a slave. So make sure you do not greet assassins until they have spoken, or come close enough that it is obvious you can see them.