2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/113090The review is a survey of the present status of research in social networks highlighting the topics of small world property, degree distributions, community structure, assortativity, modelling, dynamics and searching in social networks.17 pages, an updated version will be published as a chapter in the book Econophysics and Sociophysics: Trends and perspectives, ed. B. K. Chakrabarti, A. Chakrabarti and A. Chatterjee, Wiley-VCH 2006Physics and Societytext