Send invoices to identifiable users, which go to collections if unpaid. Eat the cost for unidentifiable users. As long as you can fix any connection problem wi

Send invoices to identifiable users, which go to collections if unpaid. Eat the cost for unidentifiable users. As long as you can fix any connection problem within a few days, the maximum value lost is limited by physics. People used to pay for stuff with checks all the time. It's similar to that.