LRV, what do you want to know? There is some PDF about making userlevels, can't recall where it's dropped. But the best way to learn is to inspect original levels and userleves made by others.
And I believe that I am not alone at this. As for spammers... It is easy to fight them automatically if you notice and fix some patterns, such as that newly registered accounts create posts with links to 3rd party sites.
Do not generalize. I am not registered at your discords and facebooks and I have no idea hth I'm going to reach wide audience if the forum will be closed.