title: WebP MIME type not recognized in Firefox
body: <p>Is the world ready for the new image format WebP ?</p>
  
  <p>I'm considering using it, the specs look very sexy, however, it seems like it is not supported on Firefox (and who knows which other web browsers), I noticed that a OkCupid.com is using it, but if you go there using Firefox - it seems like they are delivering JPEG instead...</p>
  
  <p>I wonder how OkCupid do that - do they keep additional JPEG for each image, or maybe a HttpModule ??</p>
  
  <p>I even added this on my web.config</p>
  
  <pre><code>&lt;mimeMap fileExtension=".webp" mimeType="image/webp" /&gt;
  </code></pre>
  
  <p>Am I missing something? Why doesn't it work in all browsers?</p>