The book is the result of an empirical study on the teenager’s relationship with the Internet, analyzing possible effects in the use of information technologies on the subjective constitution of the contemporary individual. The study focuses on understanding the habits and interests of young individuals in cyberspace and performs an ethnographic survey of the cyber culture, in order to unravel the ideological and economical aspects underlying the most popular virtual environments. Also under scrutiny are the ways that social networks, online gaming and virtual sex intervene in teenage life, and the role of school and family in this context.