Been noticing accounts that reply with link shortened tracking links to popular posts. They usually have some hashtags and kind of refer to the OP. However the links goto weird as fuck pages with what look like AI generated news stories (or at least conspiracy brained weirdness). I'm guessing it's some type of link farm.
It's some of the more hard to catch spam I've seen on the fediverse.
I've been trying to catch them when I see them and block them. Probably going to start reporting these types of accounts as well as now it's a pattern and not a one-off.