1. A system for displaying clusters, comprising: a generator to generate a plurality of clusters, which each comprise one or more documents and to identify concepts for the clusters based on the documents; a selection module to select the cluster concepts that satisfy an acceptance criteria and to form spines from the clusters associated therewith; a best fit assignor to assign at least one of the remaining clusters to one of the spines, which provides a best fit with the cluster concepts for that cluster; a spine placement module to place one or more of the spines into a display, wherein each placed spine is unique; an anchor cluster identification module to identify an anchor cluster with an open edge on at least one of the placed spines; and a visualization module to place one or more of the spines not already in the display, comprising: a similarity module to determine a similarity between the non-placed spine and each anchor cluster and to select the anchor cluster most similar; and an arrangement module to set the non-placed spine on the open edge of the anchor cluster.