Which key performance indicator (KPI) provides the most accurate insight into the long-term health and sustainability of a newly created subreddit?

The most accurate KPI is the ratio of returning active users to total subscribers, tracked consistently over time. This metric reflects the subreddit's ability to retain users and foster a consistently engaged community, beyond just attracting initial subscribers. While subscriber count provides a snapshot of potential audience size, it doesn't indicate how many users are actively participating o....