New technologies are constantly transforming traditional notions of language use and literacy in online communication environments. While previous research has provided a foundation for understanding the use of new technologies in instructed second language environments, few studies have investigated new literacies and electronic discourse beyond the classroom setting. This volume seeks to address this gap by providing corpus-based and empirical studies of electronic discourse analyzing social and linguistic variation as well as communicative practices in chat, discussion forums, blogs, and podcasts. Several chapters also examine the assessment and integration of new literacies.