Freedom of expression on the internet enables widespread sharing of information but also enables illegal and unethical activities if used improperly. Key issues around freedom of expression online include controlling access to information, especially for children; anonymity which allows anonymous speech but is also used for illegal acts; defamation which restricts untrue statements that harm others; and pornography which some view as protected speech while others see it as harmful if accessible to children. Responsible use of new communication technologies requires consideration of these complex issues around ethics, law, and society.