title: What does 'foo' really mean?
body: <p>I hope this qualifies as a programming question, as in any programming tutorial, you eventually come across 'foo' in the code examples. (yeah, right?)</p>
  
  <p>what does 'foo' really mean?</p>
  
  <p>If it is meant to mean <strong>nothing</strong>, when did it begin to be used so?</p>