In researching the below posts, I came across this great piece by Dick Clark;
WIKIpedia: What Is It Good For?at http://mises.org/daily/2704
In that piece, Clark notes that WIKIpedia founder Jimmy Wales was inspired by an essay by Austrian economist F. A. Hayek. Fascinating.
Here is Hayek's famous essay, in its entirety:
The Use of Knowledge in Society by Freidrich A. Hayek