A person similar to a "gold digger", but instead of $$, they will dig for (facebook, instagram, every social media site) comments by posting pictures (status, etc) and illiciting comments from people by stating opposite of the obvious.
Summer: *Posts picture of herself if a bikini* I'm so fat. My brother called me fat. I'm fat.
Friend 1: no your not guuuuurl
Friend 2: you're so pretty
Friend 15: Sweetie, being a comment digger isn't cute. If you really thought you were fat, that picture never would have gone up.