Well...actually...
Disclosure: I'm a high rep Stack Overflow user, in the upper 3%, with mod privileges but I'm not a mod.
I don't know anything
ShelLuser posted so this isn't about him but, in most cases, I find that people don't use SO correctly. They treat it like a forum but it is not. They ask for code to be written for them but that's not allowed. They give answers to questions as links to third party sites which also isn't allowed (links go dead).
When you sign up, you are told to take
The Tour but nobody does. There is also the
Help Center which nobody reads. If I refer someone to the Help Center as the reason I voted to close his question, some get mad and I wind up with 10 downvotes from 10 different previous answers of mine (which are automatically recouped by the system but no one knows that). I have a file of copy/paste text I post so they will know the exact reason they are violating the rules but I get a response of "But I don't know how to do that so that's why I asked for the code" or "OK, I'll remember that next time."
Next time? What's the matter with now?!
The quality of questions and answers there has gone downhill since I joined nine years ago. Then you have other high rep users like me who answer off topic questions even though they're not supposed to, and then lambaste you for pointing it out. "You need to be nice", they'll say. And a lot of respectable people I enjoyed back in the day no longer go there for those reasons. I rarely answer questions anymore. Now that reddit has discovered it, the quality has really dropped rapidly.
I used to regularly attend a cinematography site where professional cinematographers hung out. We were required to use our real name which had to be verifiable somehow. The calibre of professional discourse was above reproach and closely monitored. I loved that place. This forum approaches that quality where even the hobbyists are respectable.
As an aside, it's one of my fears of FreeBSD getting popular is how a site like this can protect itself. I know a few of here remember the original freebsdforums.com (is that right?). On that point, it's an area that Stack Exchange does well. Shenanigans get shut down quickly.