Digg.com has become one of the most-visited sites on the internet. The site's ever-changing content, all submitted by members, provides a vivid window onto what's interesting online, right now.
Digg moves very quickly, and has a great many stories submitted every day, so good material can sometimes fly by before you even know it. Stamen's live interactive visualizations at labs.digg.com look beneath the surface of this active community's activities, and allow for a broader (and deeper) view of Digg.
Digg Swarm is a lyrical view of Digg. Stories come in as circles with the title inside of them, and diggers "swarm" around these stories when they digg them. Every time a story gets dugg, it increases in size — so the bigger the story, the more active it is. As people digg more stories, they move from circle to circle, and increase in size. You might see enormous diggers moving quickly from story to story; those seem to be people digging without taking the time to read stories...
Stories that are closer together are being dugg by the same users, and you can roll over stories to see these connections. The thicker the line, the more diggers in common that story has — which starts to suggest connections between stories over time.
Digg Stack shows diggs occuring in real time on up to 100 stories at once. As stories are dugg, they appear along the bottom of the screen, colored according to how popular they are. Users digging these stories appear as falling blocks that stack up as activity increases. The zoom level is adjustable, so you can focus in on the most recent stories, or pull back for a broader overview. You can also pause the visualization if it's flying by too quickly, or if you want to focus on a specific story more readily.
Clicking on an individual item pulls up more information on that story — who dugg it, how many comments it has, etc. — as well as providing a sparkline-style graph that shows a more detailed hour-by-hour display of activity on that story.