F) Also not going to go into this right now, but we have a a few things we can do with pre-certifying quote retweets. Basically I can look at what they want to say ahead of time and "approve" it by giving them a token.

Well behaved servers can reject any content that hasn't done that, so while the abusive content gets passed around the abusers instances it doesn't make it to mine (though I can still see it).

Remember, this is about build a #SafErSystem not a #SafeSystem.