The FAQ answers questions about Karma posts. [1] It is entirely possible that other posts have been upvoted prior to your post. As for undocumented features,

The FAQ answers questions about Karma posts. [1] It is entirely possible that other posts have been upvoted prior to your post. As for undocumented features, there is this post [2] on github and is not written by the moderators. It includes some anecdotal information that may not be 100% accurate. [1] - https://news.ycombinator.com/newsfaq.html https://news.ycombinator.com/newsfaq.html [2] - https://github.com/minimaxir/hacker-news-undocumented https://github.com/minimaxir/hacker-news-undocumented