I’ve been meaning to post this for awhile, but my friend Heather linked me to the excellent Your Logical Fallacy Is site. It provides clear, useful descriptions of most of the common informal fallacies. Useful for linking people too in various online discussions.

My only real gripe is that it doesn’t cover formal fallacies (e.g. Affirming the Consequent), but it’s still a useful source for concise descriptions of whatever fallacy you catch yourself or an interlocutor making.