In article change of models of studying of social memory in the context of formation of network society is analyzed. The author states need of transition from substantive to relativistic the analysis in this connection selects the main methodological characteristics of network model of social memory: polylog, media, process and context. Use of these methodological principles allows to investigate memory not as a certain set of memories and as dynamic set of the social communications and the practice causing effect of the appeal to the past. At network approach separate images of social memory cease to be perceived as the historic facts possessing objective characteristics, and get points of intersection of various communications. It is worth carrying cognitive, political, ethical and practical factors to number of the most considerable determinants defining formation and transformation of images of the past. Cognitive factors are regularities of formation of knowledge of the past (following to criteria of reliability or probability). Political factors act, in turn, as a point of symbolical fight between various political subjects. Ethical and practical aspects of updating of certain images of the past are closely connected with communicative rationality and the need for formation of steady social interactions.