Zapvertising is just zap comments, which are themselves just part of a lightning invoice, right? Then the question boils down to “should anonymous Zaps be allowed to include comments” and to me the answer is yes. Others may disagree. I do think that user settings should include a toggle to hide anonymous zap comments, and another toggle to hide all zap comments. Also allow users to set a minimum threshold of sats for people they don’t follow to zap comments into their replies.