This author is a chicken little. These claims are the basis of his doomsday scenario:

Quote Originally Posted by Guy McPherson View Post
Later this year, we fall off the oil-supply cliff, with global supply plummeting below 70 million barrels/day. Oil at merely $100 per barrel will seem like the good old days.

Within a decade, we'll be staring down the barrel of a crisis: Oil at $400 per barrel brings down the American Empire, the project of globalization and water coming through the taps.
They motivated me to look up crude oil futures prices, which I repeat below:

06/2008 $113.65
06/2009 $96.20
06/2010 $103.60
06/2011 $97.00
06/2012 $103.43
06/2013 $92.31
06/2014 $93.75
06/2015 $93.50
06/2016 $94.00

The price of oil today is about $113. The above prices are very informative because they reflect the market's aggregated view of likely future oil prices. Those prices reflect the opinions of those who are putting their money where their mouths are. It looks to me like there aren't many informed market participants who think we're about to run out of oil.

Who knows what the author's agenda is, but he certainly holds an unconventional opinion on the state of the world's oil supply. The rest of his doomsday scenario seems no better founded than his estimate of future oil supplies and prices.