Two things I haven't figured out on Plus:

Blocking: if you block someone, do your public posts appear in their stream? Can they see them if they go directly to your profile while logged in?

Uselessness of "incoming": is there a way to mute entire users on your incoming feed, aside from blocking them? I don't want to block someone just because they post lengthy things in languages I don't understand :(

I've already filed feedbacks about these, so no need to tell me to do that :p
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