Aim: The aim of this study was to determine the relationships between the individual components of self-esteem and the variables related to the active use of social networking sites. Method: 110 people participated in the online questionnaire surveys. Two research tools were used: the own questionnaire on the use of social media and the MSEI Multidimensional Self-Assessment Questionnaire. Results: Participants who use more social networking sites have higher scores in the dimension of leadership skills. Assuming the existence of statistically significant relationships between the preferred place of using social networking sites and the level of self-esteem, for its individual components, it was shown that those who performed this activity in specific places obtained higher scores in terms of competences than those who did it's everywhere. The results also indicate that more frequent use of social networking sites during the day is associated with lower scores in terms of self-control and identity integration. The analysis of gender differences in the level of self-esteem and the frequency of using social networking sites showed that in men there are more negative correlations between more frequent use of social networking sites during the day and low results, and these relate to self-control and identity integration. In women, a negative correlation was found between defensive reinforcement of self-esteem and more frequent updating of one's own profile. Conclusions: Despite the presented ambiguities, it was possible to confirm the theory that more frequent use of social media is associated with low self-assessment scores.