There's about five or six users on this site who are constantly promoting their tarot courses, spiritual consultations, ghost-hunting apps, and "certified medium" services. Most of them violate the rules about self-promotion but they keep getting away with it because they're not aggressive about it - just casually mentioning their services in every post.
It's obviously affecting the quality of discussion because genuine researchers don't want to contribute to forums that are basically marketplaces for paranormal services. Can the moderation team get more strict about this? There should probably be a "commercial content" rule that actually gets enforced.