This study examines the role of social media in democracy establishment and promotion. As social media gets more and more popular and well-developed it gives ordinary people an opportunity to share information quickly. Facebook and Egypt’s revolution were chosen as a case study to illustrate the issue. The aim of the thesis is to analyse the role of Facebook in the political development, namely in the promotion and establishment of democracy. The following questions were posed: Whether Facebook can be more liberal and control free than traditional media? Whether Facebook can be constructive and uniting media? Whether Facebook can be regarded as a public sphere? The theoretical framework assumes that social media being more mobile, easily accessible and less controllable than traditional media may be regarded as a public sphere and consequently facilitate democratic development in a country. The study is conducted with a case study method and quantitative research method. The results show that Facebook during 2011 revolution in Egypt proved to be mobile, easily accessible, uniting and non controllable media enabling the citizens to share their opinion free and facilitating overthrowing the President and consequently the authoritarian regime led by him. This confirms the theory.