The dynamics of the shift of social interaction into the online media and the variety of its risks for adolescents is demonstrated. The generalization of theoretical research is carried out and internet risks for modern youth are given, such as forming of new culture of interaction, active role of interpersonal relations. setting of public opinions. Also, the predictors of such risks are summed up: psycho-physiological, social-psychological and psychological-pedagogical. On the basic of author's methodology which research the behavior in the Internet as well as the medical-psychological indices, social behavior, behavior in public places, studying excellency, the level of family welfare, it is shown that the hey indicator of the parental risks has been the children's hiding of their games and communication in the Internet decreasing of the productive activity when an adolescent spends his time, ignoring studying and housework activity; sexually improper behavior and difficulties in the self-reflection on the past day. overall, the empirical part of research demonstrates that more than 80% of parents-respondents are paying attention to the problems of adolescents only when they start acquiring an evident, growing character. The perspective trends of research on the cooperate life activity of adolescents in the Internet as a social-psychological phenomenon are suggested.