Today's youth thrive in informal participatory communities where they not only consume but also act as contributors or producers. Through active participation they develop new media skills encompassing cultural competencies and social skills. In a participatory culture of learning, students' active contributions to their learning are stressed and peer feedback is considered an important component. In this paper we consider how to leverage aspects of these skills and the environments in which they are developed in the design of a peer feedback tool for students engaged in collaborative inquiry learning. The tool needs to be lightweight, and "playful" and draw on these participatory skills in order to entice and motivate students to give and receive feedback. (Contains 8 figures.)