This plugin has not been updated by its developer since a long time ago.
It could imply partial or total lack of compatibility with the latest versions of b2evolution.
"Digg is a user driven social content website. Ok, so what the heck does that mean? Well, everything on Digg is submitted by our community (that would be you). After you submit content, other people read your submission and Digg what they like best. If your story rocks and receives enough Diggs, it is promoted to the front page for the millions of visitors to see." (Quoted from digg.com). This plugin allows you to easily post new digg articles based on your current post's information. You can also attach "Digg This!" buttons anywhere within your blog post's contents. These can link to any existing Digg Story. You can also customize the "Digg This!" buttons to a certain extent.
Requirements: B2evolution v1.9.2 (or above)