From the files of ‘stupid one line scripts that the world should not need’, this takes a URL from a JavaScript-based app like Twitter or Hype Machine and presents you with an easily copyable, real URL that doesn't contain any ‘#’ nonsense.

dehash-bookmarklet.js

javascript:(function()%20{var%20io%20=%20prompt(%22Dehashed%20URL%20(share%20this.):\n\nCopy%20the%20URL,%20then%20press%20OK%20to%20reload%20and%20confirm%20that%20it%20works,%20or%20cancel%20to%20stay%20on%20this%20page.%22,window.location.href.replace(/\/?#!?\/?/,%20%27/%27));if(null%20!==%20io)%20{window.location.href%20=%20io;}})();

dehash.js

(function() {
    // De-Hash. Removes # and #! from URLs, and presents them to you to copy
    // to share with your friends, or reuse in another app like Google 
    // Translate.
    // 
    // Sharing # or #! links means that the person you give them too needs to
    // have JavaScript available in their browser to view the page. Most of
    // them will. Unless they've turned it off for some reason (maybe they're
    // paying for data by the megabyte when they see your link) or their 
    // network is unreliable (maybe they're abroad outside of the first-world,
    // maybe they're on AT&T.)
    // 
    // This doesn't guarantee that the page you share will work without 
    // JavaScript, of course. But the best web apps will at least load the  
    // page content for crawling and static display.
    // 
    // If you think this readme is a little sanctimonious for a one-line find-
    // and replace script, you're right. Now please stop breaking my internet.
    // 
    // Works with example.com/#!/blah and example.com/#blah/sd format URLs,
    // might not work with example.com/index.php#/events.php?blah form URLs
    // (but Facebook seems to have stopped doing that, anyway.)
    
    var io = prompt(
        "Dehashed URL (share this.):\n\nCopy the URL, then press OK to reload and confirm that it works, or cancel to stay on this page.",
        window.location.href.replace(/\/?#!?\/?/, '/')
    );
    if(null !== io) {
        window.location.href = io;
    }
})();