Mobile devices have sweeping repercussions in education and suggest shifting content-engagement paradigms.  Extensive reading (ER) is not unaffected by the many evolving aspects of mobile technology in second language classrooms. This paper reflects on Xreading?, an online graded reader (GR) and learning management sys-tem (LMS) designed for digital ER. Students at a private university in Tokyo had access to this online library using mobile devices. While overall reflections were positive...