It's about information, and libraries and archiving.
Concerning archiving Mr. Sterling says:
"We're already leaving some impressive gifts for the remote future of this planet. Nuclear wastes, for instance. We're going to be neatly archiving this repulsive trash in concrete and salt mines and fused glass canisters, for tens of thousands of years. Imagine the pleasure of discovering one of these nice radioactive time-bombs six thousand years from now. Imagine the joy of selfless, dedicated archaeologists burrowing into one of these twentieth-century pharaoh's tombs and dropping dead, slowly and painfully. Gosh, thanks, ancestors. Thanks, twentieth century! Thanks for thinking of us! "

The Twentieth Century: Our Curses Work

``Free as Air, Free As Water, Free As Knowledge''