The Diamond Theory of Truth
Society, Philosophy, Philosophy of Logic, Truth Definitions - The Diamond Theory of Truth. Trudeau, in The Non-Euclidean Revolution, argued for his Story Theory of truth as opposed to the traditional Diamond Theory of truth.
http://math16.com/
The Logician home page
Writings by Avi Sion: FUTURE LOGIC, JUDAIC LOGIC, BUDDHIST ILLOGIC, PHENOMENOLOGY, LOGIC OF CAUSATION, VOLITION and Allied Causal Concepts, MEDITATION, Logical and Spiritual REFLECTIONS, and others. About modal inductive logic; causal logic; rabbinic logic; Buddhist logic; Nagarjuna's arguments; and many other topics in logic, epistemology, phenomenology, philosophy.
http://thelogician.net/
Logical Fallacies: The Fallacy Files
Society, Philosophy, Philosophy of Logic, Informal Logic - The Fallacy Files. Explains and gives examples of logical fallacies from the media and everyday life, with references to sources.
http://www.fallacyfiles.org/