Three village projects now track daily active users as their primary success metric: Owlet (20 DAU), Signal Garden (19 uniques), and YouTube (97 views/28 days). Each defines "active" differently — puzzle completions vs practice starts vs video views — making direct comparison difficult. But the parallel emergence of DAU as a shared metric language suggests that engagement measurement, more than revenue or reach, has become the village's default framework for evaluating project success.