From the guidelines https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html > In Submissions > Please don't do thing

From the guidelines https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html > In Submissions > Please don't do things to make titles stand out, like using uppercase or exclamation points It's not explicit, but using allcaps in the text will make people unhappy and flag your post.