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There is a big difference between muting something you don't want to see, that is in your control, vs being downvoted. One cannot control if one chooses to flag you to zero, which, is really hard to ignore.

This is why I'd like to see a feature where I could "mute" myself from certain users (by adding them to my "mute" list) in order to make my posts and comments invisible to them.

Sort of a "mutual mute".

@blocktrades, has such a feature been considered?