Digg Swarm (2007) - when the iPhone was announced

Folks from the original Digg might remember a cool thing from Digg Labs called "Swarm."

To quote the website "Cool Infographics" from 2007:

You can watch in real-time stories that get "Dugg" to become more popular. The visual size of the story bubble grows as the story's popularity grows. The yellow dots connected to the story show you who is digging the story, and the size of the yellow dot shows you how important that user is in the Digg universe.

Also, if the same person Diggs two stories, a connecting line is shown to highlight other story bubbles that may interest you. The connecting line between two stories gets thicker as more users Digg the same two stories showing a stronger connection.

This video shows what was happening on Digg Swarm when the first iPhone was announced.