Internet of Things allows the interconnection of smart objects, such as mobile robots, wireless sensors, etc., and of human beings, by using different communication protocols and by developing a dynamic multi-modal heterogeneous network. This paper proposes some considerations on cognitive robots based on radio frequency identification technology within Internet of Things, by adding a social dimension to human-robot and robot-robot interactions. Social networks can be used for storing and sharing links to resources of interest for the humanrobot and robot-robot interactions. A Stinger robot-based prototype was built to demonstrate the presented functionalities. The prototype shows that this model is not only flexible, but also practical.