Yesterday, Digg announced that it was changing the way it handles some links with regards to the nofollow attribute.

The point of the changes is to cut down on Digg spam. Digg is now adding relnofollow to any external link that they arent sure they can vouch for. This means External links from comments External links from user profiles External links from story pages below a certain threshold of popularityGoogles Matt Cutts posted his feelings on the matter to his blog. I think this is pretty smart, says Cutts.