A poster on a forum that posts too many times and only posts nonsense and nothing interesting. Usually a troll. Called trolltard because the poster has no life other than being on the internet
Social media friends who believe, and hold true all the beliefs their cheetoh leader demands, disregarding etiquette by trolling your page only to make provocative comments, and absolutes in forms of diatribes to bully you into submission.
"Did you see that alt right asshole on my sister's facebook talking about trump? What a trolltalitarian!!"
She is trollstalking her ex boyfriend's facebook so she can leave negative feedback on his business page. That makes her a trollstalker because she trolls people just for the sake of stalking them online.