title: Post link to Facebook page as page admin
body: <p>I'm trying to post a link to the wall of a Facebook page <em>as the page admin</em>, however it's not working correctly. It posts the link as me rather than as the page admin, and it shows up under "Recent Posts by Others" rather than the wall.</p>
  
  <pre><code>var client = new FacebookClient(post.Site.FacebookAccessToken);
  dynamic result = client.Post("/" + pageId + "/feed", new {
      message = post.Message,
      link = post.Url
  });
  </code></pre>
  
  <p>My access token has publish_stream and manage_pages permissions. The authorized Facebook account is an admin for the page. Is there some method for impersonating the page admin that I'm not doing correctly?</p>