"This person seems ranty. What can I do about that?"

Tap on the POST OPTIONS icon (the three dots below the post), choose "Mute Conversation," and presto. You'll now be spared the pontificating positings of a proflific poster.

SOFT MUTE is another option if they post more frequently than you would like. To enable that, uncheck the radio button in the MUTE dialog. #CoSoTips