You don't have to allow deletions or replicate them. I also see no reason one could not send out takedown notices to IPFS nodes, especially in the current situa

You don't have to allow deletions or replicate them. I also see no reason one could not send out takedown notices to IPFS nodes, especially in the current situation with a pretty small system - I found a number of about 2000 nodes in January 2016.