The best part of the site are the incredible comments left by the users. Often these are funnier and more obtuse than the original link, and Digg comments are something of a genre in and of themselves (good examples being repeated ASCII-rendered appearances of Admiral Akbar and something called Pedobear). Indeed, occasionally the comments can get out of hand.
Here's a crazy idea that I came up with (incidentally, while having wine and cheese with the chair of the Harvard stats department this afternoon). Why not adopt the Digg model to crowdsource peer review of grant proposals? Scientists would post their grant proposals publicly and anyone would be allowed to "digg" a proposal -- or "bury" a proposal that has flaws or a particularly bad idea. Public comments would be used to convey feedback to the authors and open up debate on the research plan to the many thousands of highly qualified Internet users who are conventionally excluded from review panels.
This model would seem to have all kinds of benefits. Rather than making funding decisions in the proverbial smoky room, requiring the funding body to spend untold millions in taxpayer money to fly panelists to DC and put them up in hotels for a couple of nights, this approach would bring everything out into the open. The Digg model would also streamline the review cycle to run in "Internet time" -- reducing the typical six month turnaround time to mere hours! Best of all, users on the site would adopt clever screen names like "W1F1d00d" and "Prof. BabyMan" lending the proceedings a certain edginess and panache sorely missing from the current panel review system.
If you like this idea, why not Digg it?