Small Pieces Loosely Joined, for kids is David Weinberger's unified theory of the web in bite-sized chunks. What does distance mean on the web, or connecting, or humanity? I'm going to spoil the ending for you, here it is:

"The real world is about distances keeping people apart. The Web is about shared interests bringing people together. Now, if connecting and caring are what make us into human people, then the Web - built out of hyperlinks and energized by people's interests and passions - is a place where we can be better at being people.

"And that is what the Web is for."