Developer: Stamen Design
Technology: Flash
There are a couple of interesting projects going on over at the newly opened Digg Labs. Both Digg Stack and Digg Swarm are web applications that display user 'diggs' in real time.
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Digg Stack displays the data in a bar graph format, with each new digg falling as a block onto it's related topic. Digg Swarm uses the same data but uses colour and a nodal structure to display relationship and popularity.
The developer, Stamen Design, has other temporal interface work on their site.