Reducing churn is critical to the success of your SaaS company
David Skok, who is a must read for all startups, explains how as your SaaS companies grow, the size of your subscription base (or customers/users) increases so that any kind of churn against that base becomes a large number.
This equates to a loss of revenue, which requires more and more bookings (think signups) from new customers just to replace what you are losing every month.