Stalkers on this site

do u guys feel like you've stalkers on this site that somehow comment under every forum post or manga comment even though they don't follow you?
I had one last year. When I think about it hypothetically, i thought smth like this wouldn't affect me, but oh god did I change my opinion once I went through it. It was so weird when the same person would like all my forum answers even the most random ones, and if u like a forum answer it gets saved in ur profile, so that's how I knew. Plus they'd comment under my answers or even say things to me that I'd say to a close friend that ik for a long time rather than a stranger on the internet, like they really closely analysed my comments and made comments about how they liked my personality. It was a weird experience but they stopped after a while but to this day I get slightly paranoid about it.