For Cullect, the benefit of this model have been obvious: even with a small number of paying customers – the servers are being paid for from subscription payments. For such a highly niche service with nearly no marketing effort – I’m declaring it a success.
On the Cashboard project I mentioned yesterday, I’m building toward a subscription model even more true to the above diagram. It seems like the right, most interesting, most challenging, and most sustainable, direction.
All the things that I expect to see from the other web apps launching in 2009.