I ran an official fan site once, for an EA title of all things. Doing this I learned some neat tricks to limit the amount of administration required. One thing that stuck was that there is a huge benefit to maintaining a specific section for garbage posts. Sticky threads existed titled: Potentially offensive/spam? Post it here. Everyone used it and followed the very few rules of the spam board. I rarely had to move a…
The issue with this is that the "garbage" posts are the ones that maximize engagement. Twitter and all the other social media sites are showing them on purpose. They're trying to maximize engagement, why would they decide to quarantine the most engaging posts?
Venting can be quite therapeutic but without an audience it isn't as effective.
Also, the community developed a bit of a stigma towards people with garbage posts outside of the designated area. Politely, in order to not themselves be stigmatized.