I have been on reddit for just about 12 years now. Something I’ve noticed over time is just how hateful the place has become. A complete outrage machine. Every single sub became filled with it. I’ve filtered so many subreddits over the last few years, it’s insane. I don’t know enough about this place to be sure, but I do hope it doesn’t become the same type of echo chamber of anger.
As simple as SpamAssassin, that is a naive Bayes classifier, to running a full-fledged LLM which is very likely complete overkill. It really doesn’t need to be particularly sophisticated as being inaccurate isn’t really a problem, the whole scheme relies on the statistical impact it has on the whole forum, not the impact it has on a single post.
PageRank really only applies to analysing links.