For me... The silent treatment is effective in one thing and that is me being devastated and withdrawing completely! I love my Master dearly but I have problems and He knows that it would totally tear me apart. It would be very hard for me to reestablish that connection with Him. I am the type of person that struggles to connect with people and I do not do terribly well with being ignored. It is all to easy for me to slip into a state of mine where nothing matters to me, I believe I matter to no one and stop having any drive to be near anyone. So no this is not a feasible punishment for me. My Master loves me and ultimately my punishments are His choice. I know that He will not do anything to leave me emotionally hurting and vulnerable. I gave myself to Him willingly knowing that He will care for me. However - I can say that for every couple it is bound to be a bit different. Each couple has their own dynamics and relationships operate differently.