So...as someone who is at least partially on the content creation side....
One email list I'm a part of is the women in game development list. And something that is extremely prevalent on that list is that someone will link to an article on say, Kotaku, that is an intelligent article addressing something about, say, not enough female characters in games developed in America, or a female character that was particularly poorly handled in a game, or an interview with a female game developer on Youtube or whatever. This is almost always followed by an email saying "As always, don't read the comments."
If an insightful interview is posted with a female game developer and then is posted on youtube, the comments will be filled with stuff like "oh god, her boobs are sagging, gross." If an interview is posted with a female game developer which people don't like, it results in death threats, people looking up her address, and threatening to find her and rape her. (Not that death threats are restricted to females; well...maybe rape threats are?)
But the thing is, this isn't the only place I've seen the line "As always, don't read the comments." I spend a decent amount of time these days on Starcraft forums, and every once in a while some main stream news source like NBC or CNN will run a story about how people play Starcraft professionally. And...the comments are similarly toxic. Stuff like wait, let me get real quotes instead of making these up, because while I've come to expect sexist behavior on the internet, these rather shocked me...
"Can they write a complete sentence in English that is grammatically correct? [...]"
"'Some Pro Gamers make 10 moves-per-second'
And yet can't pass History, Science, and English courses because they spend all their time playing games."
"It's a skill that comes in handy when they migrate from video games to online porn"
"That's funny, Professional gamers! This is a chosen career path? Does it pay in Cheetos and Red Bull! What's the average pay to be a professional gamer? "
"Gaming - the new addition. OK, they don't steal. But they are lost to society."
"I'd like their fast hands on me."
"Some programers make 10 moves per second! How to fry your brains in 10 seconds.
No wonder the majority of the population,can't string a sentence together,and not know what day it is! "
"Don't knock it. It's an offshoot skill from all that masturbating."
"I'm not impressed. . . Any boob can learn to click real fast given the time.
Have these same people calculate a falling body in Earth gravity well and account the atmospheric drag in 20% humidity as an equasion. . . . they can't do it."
"I can make 10 moves per second................in bed"
(I did pick the worst comments, which was about half of the topic starters; a few people on Reddit decided to flood the comments with rebuttals to the negative comments, so the response posts are less representative. This was from
nbcnews.com, for what it's worth).
So I'm...pretty sympathetic to negative reactions towards internet comments. That doesn't mean I want to get rid of internet forums or anything, but...yeah, not everything on the internet benefits from a comments section--discussion doesn't have to happen on the same page where you view the article/video/etc.
Side note, there's a TED talk on this subject; doesn't give all the answers, but it quotes some interesting studies:
https://www.youtube.com/watch?v=u01Qs4x1S_U