is http://www.whitehouse.com. Other innocent-sounding URLs that
retrieve graphic, sexually explicit depictions include
http://www.boys.com, http://www.girls.com,
http://www.coffeebeansupply.com, and http://www.BookstoreUSA.com.
Moreover, commercial Web sites that contain sexually explicit
material often use a technique of attaching pop-up windows to
their sites, which open new windows advertising other sexually
explicit sites without any prompting by the user. This technique
makes it difficult for a user quickly to exit all of the pages
containing sexually explicit material, whether he or she
initially accessed such material intentionally or not.


The percentage of Web pages on the indexed Web containing
sexually explicit content is relatively small. Recent estimates
indicate that no more than 1-2% of the content on the Web is
pornographic or sexually explicit. However, the absolute number
of Web sites offering free sexually explicit material is
extremely large, approximately 100,000 sites.
4. American Public Libraries
The more than 9,000 public libraries in the United States
are typically funded (at least in large part) by state or local
governments. They are frequently overseen by a board of
directors that is either elected or is appointed by an elected
official or a body of elected officials. We heard testimony from
librarians and library board members working in eight public
library systems in different communities across the country, some
of whom are also plaintiffs in this case. They hailed from the
following library systems: Fort Vancouver, Washington; Fulton
County, Indiana; Greenville, South Carolina; a regional