The world's top discussion moderators have developed successful tools for keeping online miscreants from disrupting conversation. All are rooted in one psychological insight: If you simply ban trolls—kicking them off your board—you nurture their curdled sense of being an oppressed truth-speaker. Instead, the moderators rely on making the comments less prominent.
Patient Zero here is Slashdot, the tech site that pioneered one elegant way to police trolls: crowdsourcing. Slashdot has an automated system that randomly picks a handful of readers and gives them, for a day or so, the power to describe others' comments with terms like "funny" or "off topic." Those descriptions are translated into a score from -1 to 5. Readers can set their filters so they see only comments with high ratings—and trollery effectively vanishes. One academic study found that the majority of Slashdot readers filter out comments rated 2 or lower. Indeed, the concept of crowd-voting has worked so well that sites as high-traffic as the The New York Times now use it.
How can you help to tame the comment troll?



