Evangelos Kalampokis is a research assistant with the Information Technologies Institute of the Centre for Research & Technology - Hellas (CERTH-ITI) in Thessaloniki, Greece. Since 2009, he is a PhD student at the Information Systems Laboratory at the University of Macedonia, Greece. He has also been a research intern at the Digital Enterprise Research Institute (DERI) of the National University of Ireland Galway (NUIG) from October 2010 until November 2011. Evangelos Kalampokis holds a Diploma (MEng) in Electrical and Computer Engineering (2003) from the Aristotle University of Thessaloniki, Greece and an MSc in Business Administration-MBA (2006) from the University of Macedonia, Greece....