Аннотация:Flow (optimal) experience is a well-elaborated unit in positive psychology. This unit fits well many activities mediated by information and communication technologies. The paper covers the studies in the mentioned above area, which were carried out by Russian psychologists during the last decade. The empirical studies include the analysis of flow experience in online gaming and of its role in computer hackers’ motivation; theoretical proposals refer to optimal experience in the web and software usability research and an appeal to differentiate Internet addiction and flow experience. The paper states that theoretical and applied work based on the optimal experience methodology is a promising perspective for online research.