Let me rephrase this question?

How do I block an individual from answering my site? How can I stop someone that I have replied to, from responding again? If asking for more info is confusing,than stop answering until you have an answer! Thanx,and peace out! I only want to know how to to do this,check your ego at the door......O.K.! HOW DO I BLOCK SOMEONE FROM RESPONDING? All I want to know is how tooooooooooo do this?.............Anyone? Sorry I meant to say anyone other than "byd 3 midway" might be a little more helpful?