Spam is usually more focused on some specific subforums. I'm not saying that we never find spam in the subforum moderated by @bitmover, but depending on the type of spam, like new memecoins, the spam is concentrated in the memecoin subforum, it's just an example. We can also find spam that is posted in many subforums, but this type of spam is always easier to eliminate, since you only have to go to the list of posts of that user. The more activity a subforum has, the more spam it receives.
There are different types of spam, first is the obvious one to everyone, and other one is more subtle and created by members who are using AI generated and semi-plagiarized posts.
When you first look at them they appear to be fine, but cheking whole post history can reveal what they are doing to
write generate more posts, that is usually for signature campaign.