Social network services on internet

This diploma thesis is focused on description and objective analysis of social networks on internet. History of internet social networks, basic principles they work on and psychological aspects are shown in this thesis. One of the parts of my work is dedicated to monetization methods and techniques of social networks in context of internet. An objective view on problems of virtual societies provides an abstract of the methods of their resolving. There is no in any case an ambition for this thesis to be the greatest social networking analysis, but it proviedes well structured summary of a lot of theoretical and practical knowledge, which could certainly serve as valuable base for further deeper research. The most beneficial added valut of this thesis is a comprehensive insight on social networks from different points of view: theoretical, psychological and practical. Theoretical knowledge from psychology and sociology sciences are enriched with examples from real life. This thesis brings an outline of modern trends, which makes possible to predict future development