title: API via Web: use 80 port or a custom one (like 8080)?
body: <p>We have a web service that won't be accessed by human users. I.e. only by:</p>
  
  <ol>
  <li>Javascript from a browser</li>
  <li>Mobile applications (iPhone &amp; Android)</li>
  <li>Other servers</li>
  </ol>
  
  <p>The question: is it OK to use some custom port for this (like 8080) or we should use only 80 port (so the URL won't contain the port number).</p>
  
  <p>What are the pros and cons? Are there any reasons why the option with custom ports is unacceptable?</p>