The article summarizes current foreign and Russian literature regarding the pathological use and dependence on social networks, with an emphasis on similarities and differences of this phenomenon from other types of addictive behavior on the Internet. The confirmation that social media addiction is an independent disorder is presented in the review. The variations of Internet addiction relate primarily to the effects of social interactions. However, at the same time, the similarities with other electronic addictions (for example, to a smartphone, the In-ternet, network games, etc.) have been confirmed in many different studies. The excessive use of social media is often associated with other behavioral addictions, such as food addic-tion, shopping, gaming, as well as with some other psychological health problems (anxiety, depression, low self-esteem, suicidal thoughts, etc.). The most frequently mentioned person-ality factors associated with dependence on social media are increased neuroticism, extrover-sion, decreased conscientiousness, as well as a tendency to highly emotional communication, sometimes adventurism and a demonstration of posturing and narcissism. The Bergen Social Вестник СПбГУ. Психология. 2020. Т. 10. Вып. 2179Media Addiction Scale (BSMAS) and the Bergen Facebook Addiction Scale (BFAS) have been developed in Denmark for diagnosing pathological behavior in social networks. Both tests were adapted in many countries and are increasingly used for scientific purposes. These scales presumably will help to clarify the prevalence of this kind of dependence in various age groups and objectify its associations with other types of addictive behavior, mental health disorders, and personality traits.