<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type content="text/html; charset=iso-8859–1"> Search engines enable access to information on the Internet and transform it into a limitless, usable information portal. Network content that cannot be located with search engines essentially ceases to exist for Internet users – and this fact poses a major risk to the individual user and to society. This book examines the phenomenon from the perspectives of communication science, the law, education, and technology.