Ethos, Pathos, Logos, and the forgotten one, Mythos.
It may not be the most educated or fact-based, but Mythos sways
minds. It always has, it always will. You can call it heresay or
wives tales, but it has an advantage that the others do not. It draws
upon cultural tenets to make its point.
So when someone says "Obama supports socialized medicine, he is a
socialist and therefore bad." Well, that may or may not be true.
It's an opinion. But it draws on America's psyche formed during the
Cold War, it draws on the horror stories we hear about Canadian
medicine, and it provides an easy framework for people to see him in
that light.
"Saddam Hussein murdered Shiites and Kurds in his own country, and is
evil." This does not draw on logic. But it brings back memories of
Hitler and the Holocaust. It is an argument that speaks to our
culture, and it is powerful.
I'm not saying it's a good thing. I'm saying it's not going away.
It's never going to be completely replaced by wise arguments, neither
will there come a time when an audience dismisses it because it's not
refined, respectful, or coherant.
I support your efforts to make a difference in the blogosphere but as
long as there are blogs, bad logic will only get stronger.