Using the Digg API, Chris Harrison has visualized the top 10 most-dugg stories of the day, and rendered these as a series of tree-ring-like visualizations (moving outwards in time). Rings are colored according to Digg’s eight top-level categorizations (Sports, Offbeat, Entertainment, Gaming, Science, Lifestyle, Gaming, Technology, World and Business). Ring thickness is linearly proportional to the number of diggs the story received.