title: What is gzip(gfe)?
body: <p>I see <code>gzip(gfe)</code> in the User Agent in my logs. Here is an example:</p>
  
  <pre><code>05-18 06:44AM 00.897 /NTp9 405 17ms 0cpu_ms 0kb Twitterbot/0.1,gzip(gfe),gzip(gfe)
  128.242.241.133 - - [18/May/2010:06:44:00 -0700] "HEAD /NTp9 HTTP/1.1" 405 124 - "Twitterbot/0.1,gzip(gfe),gzip(gfe)"
  </code></pre>
  
  <p>Does anyone know what this is?</p>