It's a good question. I know I signed up for one of the competitors for a year for $20, but I don't use the service any more and won't resubscribe. Someone wi

It's a good question. I know I signed up for one of the competitors for a year for $20, but I don't use the service any more and won't resubscribe. Someone with access to the back-end should be able to identify those people pretty easily though, which would let you forecast renewals better.