IMO, the quality of comments on Overcoming Bias has diminished significantly since Less Wrong started up. This was true almost from the beginning, but the situation has really spiraled out of control more recently.

I gave up reading the comments regularly last year, but once a week or so, I peek at the comments and they are atrociously bad (and almost uniformly negative). The great majority seem unwilling to even engage with Robin Hanson's arguments and instead rely on shaming techniques.

So what gives? Why is the comment quality so much higher on LW than on OB? My first thought is karma, but OB didn't have karma when Eliezer Yudkowsky was posting, and the comments were pretty good back then. My best guess is that the good commenters were mostly Yudkowsky fans, and they left when EY left.

However, I don't know if anyone else shares my impression about OB commenter quality, so I may be completely misguided here.