It has happened to me for months now but the intensity of such accounts following straight after has increased drastically over few weeks. I was actually thinking to making a similar post.
It does look like the main motive of such accounts is to farm followers to be those resteeming services or they probably sell these accounts.
Yeah, this is what people are saying. Pretty crazy, at least now we know we would be paying to resteem to a bunch of bots who don't give a shit haha.
You should certainly make a post too to spread the word and let people know what's up.