Types of fallacious logic most often seen on DU. Which is worst for DU? [View All]

[Wonk]

I've seen all of these (and more) here on DU recently. Which do you think is the most underhanded and disengenious attempt to "argue" the validity of a point that someone is trying to make and most damaging to DU in general? They all, imho, lower the level of discourse on DU when they are used.

Now, in no particular order...

1) Appeal to ridicule
http://www.nizkor.org/features/fallacies/appeal-to-ridicule.html
eg. Sure my worthy opponent claims that ________, but that is just laughable.

2) Burden of proof
http://www.nizkor.org/features/fallacies/burden-of-proof.html

3) Bandwagon
http://www.nizkor.org/features/fallacies/bandwagon.html
eg. My friends in the Young Republicans taunt me every time I make my views known. I accept their views in order to avoid rejection.

4) Appeal to belief
http://www.nizkor.org/features/fallacies/appeal-to-belief.html
eg. 80% of Americans believe X, so it must be true.

5) Straw Man
http://www.nizkor.org/features/fallacies/straw-man.html

6) Appeal to common practice
http://www.nizkor.org/features/fallacies/appeal-to-common-practice.html
eg. Since everyone does it, it can't really be wrong.
(This particularly applies to the candidate bashing threads. Just because you see someone using a fallacious argument, such as an appeal to ridicule, to bash your favorite candidate doesn't make it right to start another thread with a fallacious argument to bash theirs.)

7) Poisoning the well
http://www.nizkor.org/features/fallacies/poisoning-the-well.html
eg. That guy made a tinfoil speculation before, so don't believe anything else he says

8) Appeal to fear
http://www.nizkor.org/features/fallacies/appeal-to-fear.html
eg. If (candidate X) isn't the nominee Bush will surely win in '04

9) Red Herring
http://www.nizkor.org/features/fallacies/red-herring.html

10) Other (please specify)
http://www.nizkor.org/features/fallacies/

Feel free to discuss.