Bachelor's Thesis deals with effective promotional tools called viral marketing. The main contribution of the thesis is the definition and history of viral marketing, making analysis of process of viral marketing, progresses definition and rules for creating a viral campaign. And also aspects are necessary for a successful viral spread. There are analysis of the characteristics of social media which are dividing according to the orientation and marketing tactics. Thesis is especially about social networking called Facebook, about definition of the term, the history and statistics of users. Thesis includes the use of Facebook for marketing purposes with practical examples. The main goal of this Thesis is analysis of the project created on Fa...