Well truely speaking Digg was never in my strategy of search engine promtion. Whenever i try to use it i found y self in trouble, however i am a gr8 frnd of Digg and visit it on daily basis to see my as well as my client’s competitors activity.

One of the post by John ,

” We’ve made a few changes to the way Digg links to external sites that may impact some folks in the SEO community. These changes reduce the incentive to post spammy content (or link spam) to Digg, while still flowing ’search engine juice’ freely to quality content. We’ve added rel=”nofollow”to any external link that we’re not sure we can vouch for. This includes all external links from comments, user profiles and story pages below a certain threshold of popularity.

This work was done in consultation with leading experts from the SEO/SEM and link spam fields, in an effort to lookout for the interests of content providers and the Digg community. As always, we will closely monitor these changes in the wild and iterate based on feedback “