Websites like StackOverflow, Yelp, Wikipedia start off by being fantastically useful by using crowd-sourcing to quickly generate a large volume of content that covers topics too wide for a small group of humans by themselves.
But then crowd-sourcing becomes an albatross because an unpaid army of moderators have almost no oversight. They inconsistently apply (or don’t apply) standards, and blacklisting vitriol is a Sisyphean task.
Valid questions get blitzed and jerks proliferate because it’s seemingly impossible to police them all in real time. I saw a stat that said only 7% of SO users ever ask a second question - that means 93% probably had a bad experience.
While the problems are structural IMO they can do a few things. Downvoting should be temporarily disabled until Joel et al figure out a better model to surface important/good questions and answers; I personally now visit the forums of whatever framework or language I’m working in to seek advice because the downvoting on SO seems so inconsistently applied. Insults I can ignore but the DV makes it hard to have your issue seen.