This empirical study examines the virtual exchanges between an African American mother and son's engagement in a blog. Using literacy as social practices as a framework, this study describes how blogging was developed and used to create affinity spaces, encouraged apprenticeship models, and shaped agentic roles within their family. Attention to these digital literacy practices is provided for teacher educators, literacy researchers, and parent, family and community advocates to acknowledge and extend our thinking of how families' digital literacy practices shape literacy learning and interactions in digitally mediated environments.