Got this notice on Digg and haven't seen it reported anywhere yet. Short notice so I thought I'd post here for those that want to retrieve their data.
From the pop-up that appears when I login:
Digg Reader is shutting down on March 26, 2018. Bummer, we know. Export and download your feeds and folders from digg.com/settings and you can add those to another reader product.
Contact us at support@digg.com if you have any trouble. We love you.