I don't think it's normal or common for comments to disappear completely unless the posting user deletes them before there is a response. Sometimes they are ma

I don't think it's normal or common for comments to disappear completely unless the posting user deletes them before there is a response. Sometimes they are marked [dead], and you can see them if you set "showdead: yes" in your profile (click on your login in the upper right to access). And sometimes threads of comments are "folded", and can only be viewed if you click the "X more" link to the right of the header. But I don't think they are usually removed completely. I'm guessing you are referring to your comments in this thread: https://news.ycombinator.com/item?id=34116509 https://news.ycombinator.com/item?id=34116509? If so, the comments you are looking for are probably under the two "folded" threads at the bottom.