Can't you just make a new Digg front page with their API + some RSS + hackery?
A user creates an account and can then create filters for the stories that appear on this new front page you make, otherwise it's a total mirror content wise. heck, direct the links over to Digg instead of the original sites to head of criticism.
A user creates an account and can then create filters for the stories that appear on this new front page you make, otherwise it's a total mirror content wise. heck, direct the links over to Digg instead of the original sites to head of criticism.