title: Share button - Can the canonical link be different from the og:url?
body: <p>We have a page with several share buttons, each pointing to a different content and should be shared on user's wall.</p>
  
  <p>The problem is that, we wish the <code>href</code> generated to always point to:</p>
  
  <pre><code>http://example.com
  </code></pre>
  
  <p>We tried to make a <code>og:url</code> for Facebook to point to:</p>
  
  <pre><code>http://example.com/facebook/articleId
  </code></pre>
  
  <p>But the only way it seems to work, is if, the:</p>
  
  <pre><code>http://example.com/facebook/articleId
  </code></pre>
  
  <p>also stays on the shared page.</p>
  
  <p>Any workaround for this?</p>