Those who have never tried electronic communication may not be aware
  of what a "social skill" really is.  One social skill that must be
  learned, is that other people have points of view that are not only
  different, but *threatening*, to your own.  In turn, your opinions may
  be threatening to others.  There is nothing wrong with this.  Your
  beliefs need not be hidden behind a facade, as happens with
  face-to-face conversation.  Not everybody in the world is a bosom
  buddy, but you can still have a meaningful conversation with them.
  The person who cannot do this lacks in social skills.

                                     -- Nick Szabo