[IAmGraydon]

As someone who was very active on Digg, it failed because of a massive all-at-once redesign (Digg v4) that made it unrecognizable to those who considered it home. It’s basically the go-to case study in how not to do an overhaul.

[mvdtnz]

The worst of the changes on the redesign had been telegraphed to users ahead of time and the overwhelming consensus was "we don't want this". In other words, "Digg failed because they weren't listening to what the users wanted".