Internet Archive is a non-profit digital library offering free free access to millions of books, movies, computer programs, and musical works, as well as an archive of 349 billion web pages.
Sustainable Living Stack Exchange
Sustainable Living Stack Exchange is a fact based question and answer website dedicated to questions about living an ecologically sustainable lifestyle that can be maintained indefinitely without depleting the earth's resources.
The Shallows: What the Internet Is Doing to Our Brains by Nicholas Carr
An exploration of the Internet's intellectual and cultural consequences.
Stack Overflow is a question and answer site for professional and enthusiast programmers. All the questions and answers are released under a Creative Commons licence.