What happened to Digg?
Digg V4 and the Redesign That Sent the Community Elsewhere is a failure case about Digg in 2010. A social-news platform redesigned the mechanics that made users read as ownership, and the community had somewhere else to go. Website redesign is dangerous when the site is also a social behavior. If the redesign removes the user's status, ritual, or control, the traffic problem becomes a trust problem.
