title: OAuth: how to test with local URLs?
body: <p>I am trying to test <a href="https://en.wikipedia.org/wiki/OAuth" rel="noreferrer">OAuth</a> buttons, but they all (Facebook, Twitter, LinkedIn) come back with errors that seem to signal that I can not test or use them from a <em>local</em> URL.</p>
  
  <p>How do people usually work in development with OAuth stuff if they all seem to require a <em>non-dev</em> and <em>non-local</em> connections environments?</p>