What is the red number 3 that appears in the map?<p>Also, from the guideline: <a href="https://news.ycombinator.com/newsguidelines.html" rel="nofollow">https://news.ycombinator.com/newsguidelines.html</a><p>> <i>In Submissions</i><p>> <i>Please don't do things to make titles stand out, like using uppercase or exclamation points, or saying how great an article is. It's implicit in submitting something that you think it's important.</i>