> Bad comments are like kudzu: they take over rapidly. The kudzu comparison is excellent. If you've never been to the US South, kudzu is a vine that was brough

> Bad comments are like kudzu: they take over rapidly. The kudzu comparison is excellent. If you've never been to the US South, kudzu is a vine that was brought in from Japan by the Works Progress Administration in 1935 to help control erosion. It sounded like a great idea, as it grows fast - really fast (up to 30cm a day, in the right conditions) and adds nitrogen to the soil. But it's essentially unstoppable and it will use existing plants to support itself and get access to sunlight, smothering them in the process. When the vines droop and touch the earth, they can start a new root system from there. The only way to control it is via goats, and there aren't a lot of goats in the South. https://en.wikipedia.org/wiki/Kudzu_in_the_United_States https://en.wikipedia.org/wiki/Kudzu_in_the_United_States So if bad comments get a solid hold on your site, they can be really painful to remove. Like kudzu, they support themselves on legit comments. And will smother them if allowed to spread unchecked.