Across the internet, over the shouts of "First!" can be heard thecries of "Ad hominem!" shamefully and ignorantly used against disagreeing attacks most who call this out fall victim of the dreaded Ad Hominem Fallacy Fallacy [more inside]
posted by AndrewKemendo on Mar 6, 2011 - 107 comments

The Weak Man Argument or Getting Duped: How the Media Messes with Your Mind. A variant of the 'Straw Man fallacy,' the 'weak man' doesn't misstate a rival's position like a 'straw man,' but instead chooses "the opposition’s weakest (or one of its weakest) arguments or proponents for attack." Originally proposed by Robert Talisse and Scott Aikin here. (pdf)
posted by anotherpanacea on Sep 5, 2009 - 71 comments

Five ways 'common sense' lies to you - a description of some everyday logical fallacies and how they effect us in a larger scale.
posted by flatluigi on Mar 18, 2009 - 70 comments

The Hierarchy of Disagreement: Based on Paul Graham's essay "How to Disagree" (prev), the diagram ranks the types of arguments that can be made. Not quite the same as logical fallacies but a useful guide to measure whether you're making a good argument or if "you are an ass hat".
posted by GuyZero on May 21, 2008 - 34 comments

Fallacy Files
posted by Gyan on Feb 11, 2006 - 16 comments

"This Index of Logical Fallacies looks like it should be required reading for anyone who wants to participate in online discussions. (Hello, Metafilterians? I'm looking in your direction...)"

This from someone named Meg Hourihan. . .I found the link useful (very) while finding the linker very condescending, in this case. I guess we can consider ourselves slapped, huh?
posted by Danf on May 1, 2002 - 63 comments

Terrorists on MeFi!
posted by geronimo_rex on Jul 2, 2001 - 22 comments

A classic example of Post Hoc Fallacy. Explanation inside.
posted by Steven Den Beste on Nov 24, 2000 - 9 comments