You can also change any sensitive data you have. Also, the distributed/open web should not be one without moderation, just without mandated moderation. If I wrote a distributed social network, I would allow the user to choose a moderated "room"/"group" if he wished. This can facilitate deletion of items, but in many distributed systems, they are never deleted anyways. Be it a mostly immutable DHT or the "right to be forgotten" or whatever it is, in decentralized systems you cannot tell people what to do with data you put out there, you can only encrypt it. IMO, we'll still need the public auditable web for acts requiring responsibility for security failures. Users cannot be trusted with their own security nor can they be trusted to determine a bad actor from a good one.

MaidSafe is fully distributed. Each user is a node (i.e. "vault" or "persona" or whatever the proper name is).