title: Facebook vanity URL causing issues in like box
body: <p>I regularly create Facebook like boxs and insert them onto sites via the I frame method. It's always worked with no issue.</p>
  
  <p>Recently I had to try <a href="https://Facebook.com/plumber.blackpool" rel="nofollow">https://Facebook.com/plumber.blackpool</a></p>
  
  <p>But it failed to preview the box on facebooks like box code generator. Its iframe code won't work either.</p>
  
  <p>My assumption is because it's vanity URL has a period . within it.</p>
  
  <p>What can I do to work around? How can I find what the pages original long URL was?</p>