I. INTRODUCTION
Web2.0 expedites the pedagogical shift from teachercentered
to student-centered learning in education. This
social media form breaks down the ''wall'' of traditional
classrooms and is creating a participatory culture that "offers
exciting new opportunities to pull learners into conversations
and turn passive, knowledge-receiving students into active,
knowledge-making student." [1] Friedman [2] states "the
world is flat" in that information and resources can be
effectively and efficiently accessed and exchanged globally
from the social and economic perspectives. Emerging
technologies are also flattening classrooms. As Dede [3]
states, "teachers dictating the learning experience are
replaced with students following their own trails of interest
scaffolded by teachers, peers, and tools for thinking and
learning. Students, in turn, engage learning through multiple
modalities with varying degrees of complexity, make
connections, reformulate ideas, and reach their own
conclusions." To keep up with these macrotrends [4],
competent and confident teachers are needed to adopt social
networks as a teaching platform for promoting effective
informal learning anytime anywhere.
Worldwide ownership of mobile devices is increasing,
exceeding traditional computer market share. Mobile