One of my favorite internet comment things is when people leave comments like "did you know, PERSON did POSITIVE THING, google WORDS THAT LEAD TO HORRIFIC FACT ABOUT PERSON".
It's just the right blend of evading moderation of sometimes horrific facts, while ideally slapping someone in the face with knowledge stronger than the claim from a single comment. I dunno if it actually is effective as much as it is a meme, but it makes me giggle every time I see it.