This dissertation constitutes an interdisciplinary approach to electronic narratives, which explores the impact of recent technological developments in the literary field. The work of theorists and scholars such as Henry Jenkins, Jean Baudrillard, Lev Manovich, Albert-Laszlo Barabasi, Erving Goffman, Sherry Turkle, George Landow, Marie-Laure Ryan and Espen Aarseth, among many others, are applied to the study of how key sociological and narratological concepts acquire new meanings when implemented in an electronic environment. More specifically, this research provides evidence of how emerging media culture challenges the traditional concepts of authorship, textuality, fictionality, sequential structure, and readership, with tendencies toward anonimity, pseudonymity, collaborative authorship, hypertextual narrative structures, and the reader's involvement in the creative process. Chapter One lays out the methodology used for the study of blog-fictions. This chapter proposes an interdisciplinary approach to blogging which combines the contributions made in several fields of study within digital humanities: computer-mediated communication theory, hypertext theory, Internet ethnography, social network theory, narratology of hypertext, research on blogging and Web 2.0, ludology and performance studies. The purpose of this chapter is to conceptualize the study of blog-fictions both as an expression of information society in its current state, and as a new fictional genre that challenges traditional narrative concepts. In Chapter Two ("Blogosphere: a network of social convergences"), the center of analysis concerns the study of the blogger as a social type who reproduces its social life on the Internet. This chapter studies the peculiar and new ways in which bloggers communicate with each other and create social networks through the production and distribution of texts, hyperlinks, and multimedia artifacts. Chapter Three presents a theory of the blog-text focussing on its structure and defining features. Finally, Chapter Four analyzes how the socio-aesthetic and narrative concepts studied in previous chapters are reflected in blog-novels written in Spanish by Argentinean author Hernan Casciari. This research contributes to literary studies in general by acknowledging that electronic fictions and blog-fictions constitute an emerging literary genre with its own identifiable features, and are molded by the culture of the information society.