In your interview, you mentioned subscription services where posts would consist of links to other servers. I know you can encrypt memos on the chain. Is it possible to encrypt entire posts? My thought was encrypted posts could only be viewed by certain communities, etc. For instance, posts created through the Leo front end might only be visible to users and members of that front end? Something like that.

On chain encryption would allow people to post privately to specific groups, etc. I am thinking out loud here, but I could see some utility in that. Maybe the user has to burn a little Steem for the privilege of encryption. I am not a user of facebook but you could essentually build facebook on top of the Steem blockchain without the negative things associated with facebook, like data selling, etc.