Reading ability and digital competence are becoming more and more important in our knowledge-based society. The Education Council at the European Union has stressed eight key-competencies that are considered necessary and among them are communication in the mother tongue and digital competence (Education Council, 2006). Electronic reading is an element in both communication in mother tongue and in digital competence, and there is a need for further research in this area. Slightly more than ten years ago questions of how electronic texts differ from printed texts were asked and there were suggestions that educators must include electronic forms of reading and writing in their conception of literacy. Today, with increasing time spent on the Internet e.g., this subject is even more important. The aim of this paper is to categorize similar concepts of electronic reading and to describe similarities and differences between these in order to formulate a definition of the concept ‘electronic reading’. There are many concepts that border on or overlap each other e.g. electronic reading, digital literacy, and electronic literacy and there is a need for clarification.