For the tourist activity, social media networks became one of the most importance. Internet changed the lifestyle , planning and experiences of people and tourists. The development of new technologies, kinds of advertisting and social media networks has reached a high level. With this reason , Internet has become one of the unavoidable channels for advertisting products, services, attractions or destinations. The communication power of social media networks on a global scale quickly connects physical and legal entities. With this it is considered that the Internet is a major shift in the social and technological development of man kind. Communication between two people, mostly younger people, is revealed on the exchange of messages, images and experiences on online channels. With the appearance of most famous social networks like Facebook, Instagram, Twitter and Youtube, there have been significant changes in marketing and the way they want to establish contact with potential customers. This work describes the role of world famous networks whith serve as promotion and marketing of tourist destination. Given that tourism is a global activity, the communication between destinations and tourists has strenghtened on that level. Tourist destinations are actively involved in the development and distribution of their tourism products and services, and in their world – wide promotions , they increasingly use social networks as a channel for advertisting and communication with targeted market , potencial buyers and tourists. In order to explain the meaning of Internet advertisting and its purpose in this work, an example will be world famous tourist destination of Bali , it will be listed and analized of how promotion affects the ambience.