title: How do I clear the opengraph's image tag proxy cache?
body: <p>I have a page with og tags (including a <code>source</code> and an <code>image</code> - a youtube-like video view page).<br>
  I've replaced the image the og:image tag points to, to another image by the same name. However, when using the facebook linter/debugger, the image shown is the old image, while clicking the image itself, opens and shows the new image.</p>
  
  <p>Facebook uses some kind of a proxy cache for the content of the image - how can I clear it without changing the name of the image file ?</p>