title: How/Where to store data in a Chrome Tampermonkey script other than localStorage?
body: <p>I wrote one Greasemonkey/Tampermonkey script for Facebook . I needed to store data to retrieve it later. For that I used <code>localStorage</code>.</p>
  <p>That was working fine. But I noticed that after few hours all data which I stored was removed automagically. Probably Facebook itself deletes all localStorage data.</p>
  <p>I searched for alternatives.</p>
  <ol>
  <li><strong>Cookies</strong> :  No this will be removed when user clears history.</li>
  <li><strong><a href="http://www.w3.org/TR/webdatabase/" rel="noreferrer">Web SQL</a></strong> : Apparently it is dropped by w3.org. So in near future I assume chrome might not be using web sql too.</li>
  </ol>
  <p>I want to store the data in the client system. What options do I have? Should I use FileSystem to store data?</p>