Although participatory culture promotes productive engagement in online spaces, members may respond in ways that constrain digital composition practices. This article provides theoretical and contextual background regarding a shift toward digital media production and programming-as-writing for youth. In addition, I describe the intersecting of computational thinking, computational participation, and participatory culture within Scratch, an online programming community. Findings from a descriptive case study focused on early adolescents as they engaged in digital media composition within an online programming community called Scratch are examined. Specifically, I discuss the contrast in the digital composition experiences of two participants as they leveraged participatory culture in the creation of digital media. This research highlights assumptions made regarding participatory cultures and the need to consider how to foster productive and sustainable digital literacy practices for youth in participatory cultures.