Originally proposed as a technological solution
that would forestall official censorship, content filtering has
been shown to pose its own signicant threats to free expression
on the Internet. Often characterized by their proponents as mere
features or tools, filtering and rating systems can also be viewed
as fundamental architectural changes that may, in fact, facilitate
the suppression of speech far more effectively than national laws
alone ever could.
This newly revised edition addresses recent developments,
including new content control legislation in the United States,
efforts within the European Union to establish a uniform rating
regime for online material, and the growing controversy over the
use of filtering in public libraries. Partly as a result of the
writings contained in this collection, the headlong rush toward
the development and acceptance of filtering and rating systems has
slowed. These critical views must be considered carefully if we
are to preserve freedom of expression in the online world.