Fact: Steve Kangas' FAQ is loaded with terrible arguments and logical fallacies
Myth: No one has a right to my property. Fact: Our property rights are defined by democratic government, which is the sovereign owner of the nation's territory.
Myth: Tax cuts spur economic growth. Fact: High tax rates are correlated with economic growth.
Cum hoc ergo propter hoc
The Austrian School of Economics is a tiny group of libertarians at war with mainstream economics...Academia has generally ignored the Austrian School
Argument ad populum
Myth: A capital gains tax cut will spur the economy. Fact: Historically, economic slumps and unemployment have followed capital gains tax cuts.
Post hoc ergo propter hoc
It would, of course, take a lifetime to go through Kangas' FAQ and point out all the fallacies and weak arguments. But these are just a handful off the top of head--I'm sick of people citing him as if he's gospel.
UPDATE: Back before he went nuts, Francois wrote a number of good responses to Kangas. Worth reading.