This will be a heck kewl visulazation tool for gmail!!

take a look

http://infosthetics.com/archives/2006/06/email_thread_visualization.html

Is this something similar to on of the future-digg-feature?

oh well, its it just come out of incubator status.. so as -digg-feature.. ?? nawwwwwww.. I dont think that they can accomplish that!!

Other stuff would be more usefull though...