La función educativa de bibliotecas y bibliotecarios en el contexto de las tecnolog\\\ias participativas de la web social

We describe the possibilities of some cooperative tools of ?Web 2.0? for improving the educational role and function of libraries and librarian. In particular, blogs, wikis and social networks are considered ways to produce and publish information that contribute to acquire information literacy. We also explain how ?Web 2.0? modifies some practices and principles of librarianship, and because of these changes we consider that librarian should be educator in the Internet context, using a new Spanish word, "entrenauta", with which we synthesized this proposed role.