bulk / spam postings across the site

Just curious if anyone else has noticed (I'm sure some have) posts that some accounts make across an enormous number of subreddits lately.

I stopped using Reddit for most of things when I joined Lemmy but my partner posts NSFW stuff there still since the community for that in Lemmy is still quite small, and occasionally we see accounts making thousands or more posts across an ungodly number of nsfw subreddits. It's almost always promotional spam (OF, etc) and more often than not it's blindly posted and either doesn't follow the rules of the subreddit or is outright inappropriate for it (e.g. posting to specific kink subreddits while the post has literally nothing to do with that kink). Some of these accounts even seem to automatically reply to some comments with what appears to be chat-gpt type comments and usually it's super obvious it's a bot.

In my mind I figure this is just some shady service paying for reddit's API access and charging these clueless "creators" to promote their stuff across the entire site. How effective that actually is in generating leads for their OF, etc I would be very interested to know but it's probably minimal, maybe not, I dunno.

Anyway, I did a very brief search online for services offering this sort of thing but didn't come across anything. Just curious if anyone knows about it or how people are getting onto these braindead posting services. Not looking for links or anything just thought it was interesting (if not frustrating spam) for a discussion.