If you haven't checked out Wikipedia you better. It's the most up to date Encyclopedia in the world as evidenced by one of its latest entries... Head to Wikipedia and search for John Harrington. Scroll down to the "See Also" section and read the 2nd entry.

traveling in this part of the world has helped me understand the value of this free content encyclopedia. A constantly updated resource that will soon be accessible for free by almost anybody on the planet. With the distribution of the $100 laptop in countries like Thailand and Cambodia, children will have free access to sites like Wikipedia and free textbook projects aimed to create free content open-source textbooks that will rival any $150 textbook. And by using Linux as the laptop's operating system (the One Laptop Per Child organization declined an offer to use Apple OSX for free) the children will be able to customize and create their own software and operating systems.