The behavior of who gets downvote and flagging rights is clearly spelled out. It's available to anyone who's been on the site long enough (and it's not that long, at all). I see this all the time where people complain about "being censored", where the reality is the community has heard what you have to say, we just think it sucks. That's not censorship, that's pretty politely stating we would prefer HN not become the cesspool of online discourse that pervades nearly all other online forums.