This is vendor lock-in and this is how facebook retains users. If facebook was not locked down but open, many people would have left already if they had come i

This is vendor lock-in and this is how facebook retains users. If facebook was not locked down but open, many people would have left already if they had come in the first place. Now when the volunteers stop using facebook, it's the shelter that will lose their volunteers. The obvious solution is for the shelter to self host its own group.