I think a cool #moderation feature would be to show "how many folks I know have this instance/user muted or blocked?"
#ssb had this and it was east to preemtively block shitheads when bumping accross them.
Follow
I think another really important tool is to know who a person follows that you follow or who follows them that you follow. this is a great way to just get context on were in your social graph they fall which can help provide more context. this can also be great for avoiding misunderstandings if you know that somebody is coming from a different social context that changes the way you would interpret what they're saying.
