That was an interesting paper.
  *I will summarize the paper, which was interesting:

  It goes through, one by one, the common denials of moral
  realism.

  It does not present an argument *for* moral realism, but rather
  seems to act as a challenge. Put more simply, the paper is
  saying:

  "HERE, MORAL RELATIVISTS: these are your arguments. I shall
  destroy them one by one".

  At the end the author doubts that it's possible to refute moral
  realism at all.

  It's a "God of the gaps" position so to speak; an interesting
  stance as it does not need to define itself precisely, but
  rather it is a stance that says, "Go ahead. Fight my position.
  You can't".

  Definitely an interesting read. Granted, I didn't read it. I
  scanned the bold face and the conclusion and introduction. But
  the main argument was clear.