Most public relations practicioners make activitiy on social networks a part of their daily tasks. New media are the prerequisite for the creation of social media which are characterized by the fast approach to content, text and photos, as well as video and audio content exchange and different forms of connecting and networking of a huge number of people.They facilitate communication and exchange of experience, views and opinions for their customers on daily basis.When it comes to tourist destinantions, a specific kind of social reaction is almost unavoidable, so it comes as no surprise that we see the increase in the use of social networks as a promotion tool for a tourist destination. The number of tourists who source the information about a destination on the Internet (especially on social networks), before they travel, is growing. They get both the basic information, as well as the reviews of other travellers. Therefore, the most widespread form of oral recommendation, the 'word of mouth', in the last few years became the 'word of mouse'. As regards the Croatian tourist destinations, this paper started out with the secondary content research and visual appearance research of the websites of selected cities. In two of these tourist destinations, Bjelovar and Zadar, primary research sought to establish the level of social media use in the promotion of tourism.