I’ve talked previously about exploiting Digg to get links and so forth. All links in the ‘who blogged this’ and ‘comments’ area are direct links - no nofollow or anything of that sort.

Now - what Digg does is hide old comments from old stories. But what they do do is show new comments for old stories.

So - you find old stories that were heavily dugg, and throw in your comment. Easy as pie!

Observe our friend Card Warrior going at it.

Check out the Google Cache copy of the first post he commented on.

And a ton more links - all from Digg.