If you have concerns that the posts might be fake, you may follow the directions from "Guidelines" link at the bottom of the page to contact the site administra

If you have concerns that the posts might be fake, you may follow the directions from "Guidelines" link at the bottom of the page to contact the site administrators: "Please don't post insinuations about astroturfing, shilling, bots, brigading, foreign agents and the like. It degrades discussion and is usually mistaken. If you're worried about abuse, email hn@ycombinator.com and we'll look at the data."