From https://news.ycombinator.com/newsguidelines.html

  > Please don't post on HN to 
  > ask or tell us something.
  > Instead, please send it to
  > hn@ycombinator.com

However, you can post something, or comment on something, logout, then see if you can still see your post or comment.

But I can see you question, so what makes you think something is wrong?