Ever since I posted that rap video about Hayek and Keynes, I've been reading the author's website, Cafe Hayek. It's written by Don Boudreaux and Russ Roberts, professors at George Mason University. I highly recommend it.
In economics, there are several schools of thought. The prevailing school of thought right now is Keynesian, which basically advocates consumption as the driving force of the economy. An opposing viewpoint to this theory is the Austrian school of thought, for which Friedrich Hayek is largely responsible. That should give you an idea of what they talk about.
Friedrich August von Hayek was an Austrian-born economist and philosopher known for his defense of classical liberalism and free-market capitalism against socialist and collectivist thought.