By "burn it" I meant turn it into charcoal... Charcoal averages 80% carbon (range 50-95%), whereas depending on the type coal ranges from 60-92% carbon, with the purest type, anthracite, being 86-92% carbon
Given a mass production system would likely result in more uniform carbon content near the top of the range, I don't think it's unreasonable to suggest that they could be swapped out pretty easily
Sure, but people have memory and if you block people who aren't even going to contribute to the running costs of the site via the channels they provide, never mind profit, then from the site owners perspective it's pretty great if you recognise it as a site you don't want to visit as you likely won't come back