Just go to a local library and ask a librarian or anyone who has a lot of books and tries to give them away; sadly, in most cases, they pick the valuable ones, and the rest just get sent for destruction (Burning).

It is pretty standard procedure.

The difference everyone is missing, is that now there is commercial incentive to burn books aka destroy them after scanning. It's now a profitable business to do so, not something that only has to be done to clear up space