Your definitions and my definitions are the same, I think.
Both turn out to be P / (F + P), for P = "accounts currently paying" and F = "accounts currently free".
P.S. You use Rails, right? If you're interested I'll blog on the code for this -- it is under 25 lines for the stupidest thing that will possibly work.
Yep, we do. I always welcome more blog posts :D For me, I don't have time to do the design/marketing/'vision thing'/cust service AND code, so I'm leaving the code to my partners. I suspect he already has a plan but it hasn't been implemented yet.
Maybe I can hit him over the head with free code ;)
Both turn out to be P / (F + P), for P = "accounts currently paying" and F = "accounts currently free".
P.S. You use Rails, right? If you're interested I'll blog on the code for this -- it is under 25 lines for the stupidest thing that will possibly work.