Scott Alexander about public comment sections: https://slatestarcodex.com/2019/02/22/rip-culture-war-thread/
I strongly recommend his blog, "about science, medicine, philosophy, politics, and futurism". He is a psychiatrist and there is, among many other things, some very interesting discussions about drugs and brains. He conducts a survey of his readers every year that sometimes yields surprising results. This year, there was unfortunately no significant correlation between corn eating habits and preferences between algebra and analysis.