title: Disqus api, fetching jsonp with jquery returns bad request
body: <p>I need to get some data from disqus, using their api. Normal JSON won't work due to CORS, so I know that I have to use fetch jsonp datatype. However, everytime I try, I get 400 bad request error. Even though when I use the same url manually, there aren't any errors. Do I need any additional headers?</p>
  
  <p>My tries:</p>
  
  <pre><code>$.ajax({
      url: 'http://disqus.com/api/3.0/forums/listPosts.json?callback=?',
      data: {
          api_key: api_key,
          forum: forum,
          limit: limit,
          include: 'approved'
      },
      timeout: 3000,
      success: function (result) {
          console.log(result);
      },
      error: function (result) {
          console.log('Fail');
      },
      dataType: 'jsonp'
  });
  
  $.get('http://disqus.com/api/3.0/forums/listPosts.json?callback=?', {
      api_key: api_key,
      forum: forum,
      limit: limit,
      include: 'approved'
  }, function (result) {
      console.log(result);
  }, 'jsonp');
  
  $.getJSON('http://disqus.com/api/3.0/forums/listPosts.json', {
      api_key: api_key,
      forum: forum,
      limit: limit,
      include: 'approved'
  }, function (result) {
      console.log(result);
  });
  </code></pre>
  
  <p>Resulting url is always identical:</p>
  
  <pre><code>http://disqus.com/api/3.0/forums/listPosts.json?callback=jQuery11020343882777960971_1385133360572&amp;api_key=XXX&amp;forum=YYY&amp;limit=2&amp;include=approved&amp;_=1385133360573
  </code></pre>