Pre neki dan nastupile su male promene u DIGG-u, rešili da pročiste spamerske linkove postavljajući nofollow tag na svim externim linkovima dok "ne budu bili sigurni da linkovi nisu spam".
citat:
"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.
Cheers,
John"
http://blog.digg.com/?p=864