This paper examines the emerging phenomenon of blogging, using three different Polish blogging services as the base of the research. Authors show that blog networks are sharing their characteristics with complex networks (\gamma coefficients, small worlds, cliques,  etc.). Elements of sociometric analysis were used to prove existence of some social structures in the blog networks.

PACS numbers: 89.65.Gh, 89.20.Hh, 89.75.Fb