The Internet plays an important role in the contemporary world and, consequently, activities taking place online are becoming increasingly regulated. While the need for regulation seems well recognized today, opinions differ on the question of what the scope of regulation should be and what means are appropriate for achieving regulatory goals. This book examines the challenges facing regulators, taking into account specific features of the global network. It does not limit the analysis to particular states or legal systems, but covers a variety of approaches to regulation of online expression, revealing their interconnection, advantages, and drawbacks. It evaluates both the probability of success or failure of various regulatory measures and the consequences the regulation may have for freedom of expression.