I don't know if I just missed the Digg era, but it is interesting to think about why Digg didn't catch on and become as popular as other sites such as Facebook and Twitter. Is it saying something about our society? Do we care more about being social, looking at people's profiles and finding out what our "friends" are doing, more than we care about real events and news that is occurring? I would like to think that this is not true, but judging from the popularity of Facebook and Twitter over Digg, I think that it actually may be a possibility.
I found this article about some changes being made at Digg: http://news.cnet.com/8301-17939_109-20045598-2.html