This bachelor thesis is primarily oriented on practical use of social networks in marketing. The main aim is to analyse the contribution of this modern platform to doing business and evaluate its potential for the future. Theoretical part introduces the mapping of the current position of social networks in marketing and opportunities for implementation of traditional marketing tools into this platform and provides an overview of the main advantages and disadvantages, that are consequent upon the specific characteristics of the social networks. Practical part consists of an overview of current and future trends on the internet and an analysis of two questionnaires and one interview with the marketing director of a particular firm about SMM m...