title: What is CavalryLogger and do I need it?
body: <p>I'm doing some optimisation on a site Ive recently taken over. I've found a script I don't recognise:
  <a href="http://static.ak.fbcdn.net/rsrc.php/zo/r/V95Lkt_uLNB.js" rel="noreferrer">http://static.ak.fbcdn.net/rsrc.php/zo/r/V95Lkt_uLNB.js</a></p>
  
  <p>It could be a facebook thing, and there's some key logging going on (that Im not too keen on)</p>
  
  <p>It is without a doubt the largest file being requested on a page load (87kb) so if I can do without it, it'll really speed up the page load.</p>
  
  <p>Does anyone know:<br>
  A) What it is<br>
  B) What it's for<br>
  C) What it does<br>
  D) Can I do without it </p>