Some embodiments provide methods for displaying representative organizations of content. These methods display a plurality of representations, detect a command to implement a first content zoom, select first and second organizations of content associated with first and second representations, evaluate metadata associated with the first and second organizations of content to identify first levels of additional content associated with the first and second organizations of content, where the additional contents are descriptive of the first levels of detail of the first and second organizations, and display third and fourth representations of the first and second organizations of content, respectively, and the first level of the first and second additional contents.