I found it interesting as well, which is why I shared it. I was particularly interested in this part:
What matters, it seems, is not so much whether you are commenting anonymously, but whether you are invested in your persona and accountable for its behaviour in that particular forum. There seems to be value in enabling people to speak on forums without their comments being connected, via their real names, to other contexts. The online comment management company Disqus, in a similar vein, found that comments made under conditions of durable pseudonymity were rated by other users as having the highest quality.