From Google Cache:

    <!DOCTYPE html>
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="">
    <meta name="author" content="">
    <!-- Latest compiled and minified CSS -->
    <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
    <!-- Theme -->
    <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap-theme.min.css">
    <!-- Bootstrap requires jQuery -->
    <script type='text/javascript' src='/js/lib/jquery-1.10.1.min.js'></script>
    <!-- Latest compiled and minified JavaScript -->
    <script src="//netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
    <!-- TODO(gmike): Decide on local vs. CDN
    <link href="/css/bootstrap.css" rel="stylesheet">
    <link href="/css/bootstrap-responsive.css" rel="stylesheet">
    -->
    <link rel="shortcut icon" href="/img/btw.png">
    <link href="/css/ss.bootstrap.css" media="all" rel="stylesheet" type="text/css"/>
    <title>ONE PERSON TYPES, EVERYONE ELSE WATCHES</title>
    <link href="/css/ss.usall.css" media="all" rel="stylesheet" type="text/css"/>
    <link href="css/countdown.css" media="all" rel="stylesheet" type="text/css"/>
    <link href="fonts/countdown.css" rel="stylesheet" >
    <script type='text/javascript' src='/js/lib/underscore-min.js'></script>
    <script type='text/javascript' src="/js/lib/jquery.countdown.js"></script>
    <script type='text/javascript' src='/js/ss.usall.js'></script>
    <!-- COUNTDOWN -->
    <link href="css/countdown.css" media="all" rel="stylesheet" type="text/css"/>
    <link href="fonts/countdown.css" rel="stylesheet" >
    <script>
    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
    m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
    })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
    ga('create', 'UA-6372191-31', 'onepersontypeseveryonewatches.com');
    ga('send', 'pageview');
    </script>
    </head>
    <body>
    <div class="navbar navbar-inverse navbar-fixed-top" role="navigation">
        <div class="container">
        <div class="navbar-header">
            <a id="presence" class="navbar-brand"></a>
        </div>
        </div>
    </div>
    <div class="container" id="message-wrapper">
        < text area id="complete-message">Knock, Knock.
    who&#39;s not not there?
    hakeem.</ text area >
    </div>
    <div class="container modals" id="modal-wrapper">
        <input type="button" id="action-claim-control" class="gone btn btn-primary" value="Type something" />
        <input type="button" id="action-done" class="gone btn" value="I'm done typing." />
    </div>

    <script type="text/javascript" src="/sdk/v1/embed.js"></script>
    <script type='text/javascript'>
        var usall;
        $(document).ready(function() {
        usall = new UsAll($('textarea#complete-message')[0]);
        usall.initialize();
        });
    </script>
    </body>
    </html>

Looks like some kind of live <textarea/>, and then... ?

Also, I think HN needs to sanitize their form inputs a little better...

Google cache (text only) content is:

  Knock, Knock. who's not not there? hakeem.

From this, I doubt the site contains anything edifying or informative. Perhaps the submitter "haberdasher" should explain why he submitted this to HN, since the site is down and we cannot experience it for ourselves.

The site is mostly an experiment of sorts.

...and the server is back. Someone pasted in a user manual or some massive text.

Pretty interesting. I didn't get to participate since on mobile the keyboard didn't appear

One person clicks, everyone else waits.

One person types and I cannot watch, dear HN what is this web site?

I'd assume it's a collection of stock photos with numerous people crowded around one computer.

Literally a waste of 3 mins of my life.

probably just an experiment

...and the server crashed.