It's a fair question. I want this to be sustainable, and you want the services you rely on to be sustainable. In truth, I'm trying to determine a pricing model

It's a fair question. I want this to be sustainable, and you want the services you rely on to be sustainable. In truth, I'm trying to determine a pricing model right now via this Show HN. I don't intend to "yank the free version" from anyone. Maybe I'll be able to find a freemium model, maybe I'll be able to acquire sponsorships, maybe there will be a way to simply charge for it... I don't know. But folks that start using it now will be grandfathered in, so you don't have to worry if you don't want to pay. I don't (and won't) have any investors that I need to satisfy. So there's no VC breathing down my neck, pressuring me to squeeze users. I hope that's a satisfactory answer to your question and that it allays your fears. :-)