The usage of social media is vital part of businesses practices and lives of individuals today, tourism being not exception. Yet, despite the wide reach of social networks there is a lack of understanding which factors contribute to becoming an influencer on social network services. This chapter particularly focuses on the largest video-sharing platform YouTube. It analyzes common success factors in three different countries: Canada, Germany, Italy and concludes by explaining which factors can be considered as relevant in order to succeed on YouTube. The objective is to find common factors which enable Youtubers to succeed. Predict which quantitative and qualitative elements can actually influence the success of a Youtuber and through ANOVA, Descriptive Analysis and Linear Regression find if there's actually a link between these elements and the number of subscribers. Lastly, it will try to assess on three case studies, how different tourist destination use the power of YouTube.