What does it do exactly?<p>Displays a Hacker News icon on your browser that changes color when the top story changes.<p>How does it do it?<p>The extension opens a websocket connection to the Hacker News Firebase (<a href="https://hacker-news.firebaseio.com/" rel="nofollow">https://hacker-news.firebaseio.com/</a>) so it can detect new top stories in real time.<p>Source code at <a href="https://github.com/robbiewain/hack-the-news" rel="nofollow">https://github.com/robbiewain/hack-the-news</a><p>I really just made it for myself but others have found it useful so I'm posting here. Enjoy!