Presencia y usos de Facebook en las bibliotecas populares de La Plata, Berisso y Ensenada: (Argentina).

This paper analyzes the uses of the social network Facebook by popular libraries in La Plata, Berisso and Ensenada (Argentine). After a bibliographic review on the subject, we expose the methodological procedures employed to identify which institutions have an account on this social network and then the main uses they make of the tool in question. The uses by the libraries are analyzed according to several variables: The number of followers, the frequency and type of posts, and finally, the quantity and quality of the comments, the characteristics of the interaction with the environment, among others. In the results, a quantitative analysis of the established variables, shows an atypical case, who presents higher number of followers, greater frequency and number of postings and more interaction with the members of its community. The conclusion shows the late arrival of these libraries to Facebook, which places them in a learning period. [ABSTRACT FROM AUTHOR]