One of the main challenges in developing and applying modern technologies in our societies is the identification and consideration of ethical issues. With the dramatic growth of emerging technologies in today's societies, such as social robots, lifelike computer graphics (avatars), and virtual reality tools and haptic systems, the social complexity of these challenges is on the rise. To be prepared to face these challenges, researchers in engineering sciences and humanities are forming interdisciplinary research groups/activities and try to determine the rate of evolution as well as the effects of socio-cognitive systems on human interaction with intelligent tools and/or artificial agents. A growing number of social robotics researchers are seeking to create a framework to benefit from humanities, philosophy, sociology, and social neuroscience expertise and research. Likewise, growing trends of mutual collaboration among scholars in the field of human sciences, linguistics, and psychology with the robotics scientists are producing quite noticeable valuable results. This paper presents an overview of the novel and multidisciplinary area of socio-cognitive robotics, and further explores the possible ethical challenges of emerging technologies on education, culture, entertainment, gaming, nursing, and therapy. In addition, some key ethical features based on our past and present research experiences in a variety of areas in designing safe social robots are also presented.