title: Twitter-style autocomplete in textarea
body: <p>I am looking for a Javascript autocomplete implementation which includes the following:</p>
  
  <ul>
  <li>Can be used in a HTML textarea</li>
  <li>Allows for typing regular text without invoking autocomplete</li>
  <li>Detects the <code>@</code> character and starts autocomplete when it is typed</li>
  <li>Loads list of options through AJAX</li>
  </ul>
  
  <p>I believe that this is similar to what Twitter is doing when tagging in a tweet, but I can't find a nice, reusable implementation.<br>
  A solution with jQuery would be perfect.</p>
  
  <p>Thanks.</p>