Social media significantly affect the development of the information and knowledge-based society in terms of business and sustainable development. They are important sources of information, they create stakeholder networks, databases, play an important role in communication with target groups, and influence purchasing behaviour. This article focused on the use social media when searching for product to be purchased information. A questionnaire survey revealed that there is a significant positive relationship between the intention of buying a product and its purchase via social media. It was also found out that searching for information on a product to be purchased using social media is not influenced by gender or average monthly income.