title: Dot in file name?
body: <p>Is it okay to use a "." (dot) in file names instead of camelcase or dashes etc.. for example:</p>
  
  <pre><code>ico_active.user.png
  </code></pre>
  
  <p>Will it cause any performance or browser compatibility issues or some other disadvantage?</p>
  
  <p>Thanks!</p>