Macbeth and Prospero

http://stephenheiner.blogspot.com/2008/05/sound-and-fury-signifying-something.html

I have a bad habit of finding these more in depth posts in the morning, when I am at work, and don't have time to properly read them through.  This one is all about Macbeth, the "bloody orgy of death", and The Tempest, the "utter avoidance of death."  Somebody read it and tell me what point it's trying to make :).