The University Library of Córdoba, due to the sociological phenomenon that has supposed the use of the sites of social networks within web 2.0 recently, has opened a small virtual branch in facebook to be in contact with its users and offer them its services. This article makes an analysis of the first year of the Library in Facebook. In the first part, it is explained why the project has been created and carried out. In the last part the obtained results are analyzed, based essentially on the study of the information that facebook sends weekly. The analysis shows not only that the presence of the Library The analysis shows not only that the presence of the L. in the social network has been very useful but also that some changes must be made in order to improve our services
