title: How do configure optional or "extraneous" URLs?
body: <p>How would you configure/handle extraneous/optional URLs entities (aliases, maybe)?</p>
  
  <p>SO is a good example:</p>
  
  <ul>
  <li>stackoverflow.com/questions/99999999/</li>
  <li>stackoverflow.com/questions/99999999/<strong>question-goes-here</strong> (bad example, but I couldn't think of better)</li>
  </ul>
  
  <p>Amazon URLs are even more confusing (e.g., the <a href="https://rads.stackoverflow.com/amzn/click/com/B000FI73MA" rel="nofollow noreferrer" rel="nofollow noreferrer">Kindle</a>)</p>
  
  <ul>
  <li>amazon.com/gp/product/B000FI73MA/</li>
  <li>amazon.com/<strong>Kindle-Amazons-Wireless-Reading-Device</strong>/dp/B000FI73MA/</li>
  </ul>
  
  <p>[<strong>EDIT</strong>] This probably isn't the best plan-of-action, but I'm really asking this in general vs. for any single server.</p>