I thought this article from The Guardian was fascinating in the way they presented the data, the conclusions they draw, and the fact that they are trying to keep comments open despite the obvious issues. https://www.theguardian.com/technology/2016/apr/12/the-dark-side-of-guardian-comments
Particularly loved the “play the moderator” game at the bottom of the page. Very cool way to get some interaction for the article.
For me, the headline was that only 2% of comments needed to be blocked!