Wikimetrics is on wmflabs.org domain, but nowhere I see a note that it's not production. Non-technical user may not know that Wikimedia Labs domains can disappear any time, unlike production-level stuff managed by ops. To avoid something like the etherpad.wmflabs.org fiasco, I suggest to clearly write somewhere that wmflabs.org instances cannot be trusted with any permanent data, hence users have to keep backups of everything locally.
Version: unspecified
Severity: normal
URL: https://metrics.wmflabs.org/