Digg's Labs section launched last year with new ways to visualize Digg activity. Last week BigSpy, a new visualization tool that's eye candy in the purest sense of the word, quietly popped up. New stories appear at the top of the page, which offsets the rest of the stories in a wavelike motion. The more popular a story, the larger it is and the bigger the "wave" it causes on other stories. It's a mesmerizing effect.
One of the other Digg Labs' tools, Stack, was also updated. Stack essentially shows the popularity of a story with columns of various heights. Each new Digg contributes to a story's height. With the update, you can now see newly submitted stories and easily see which ones are gaining in popularity. Neat.