Unseen Skins are a series of canonical online-exclusive mini-episodes that are used to add extra exposition on both the episodes and the Series they pertain to. For every Series except for Series 3, each mini-sode is released on E4.com the day after an episode is broadcast on E4. In Series 3, the character video diaries functionally replaced Unseen Skins, with the mini-sodes instead being flashbacks or sidestories that are not connected to any specific episode. In Series 5, instead of solely video mini-sodes, Unseen Skins included music, photos, twitter feeds, stories, and blog posts.