The widespread use of social technologies, in particular Web 2.0 tools, is a relatively new phenomenon. Critics have voiced their concerns about the possible negative effects of social network use, such as inappropriate pictures and fake users. Developing an instruction-based social network can be considered a solution to the potential risks of these networks for instructional uses. In that case, there some other questions rise, such as, "What kind of applications / activities can be shared?", "Are the activities limited to instructional content only?", "What is the scope of instruction-based social networks?". This study aims to explore teacher's opinions on instruction-based social networks. (C) 2013 The Authors. Published by Elsevier Ltd.