Bugzilla admins received a custom daily email (cronjob) that listed recent changes (new accounts created, projects created/renamed/changed).
Once it existed (after Bugzilla 4.2 only), it was helpful to identify and avoid duplication of certain efforts or inconcistency.
In Phabricator, getting a better overview which projects get created and guideline application can be helpful, as we have many people in the ProjectCreators group who can perform such actions.
In the phabricator_project DB:
SELECT name, editPolicy, viewPolicy, editPolicy, joinPolicy, icon, color, status FROM project WHERE FROM_UNIXTIME(dateModified,'%Y%m')=date_format(NOW() - INTERVAL 1 MONTH,'%Y%m');
Status: 0 = Active; 100 = Archived.
The rest of the values is self-explaining.