title: Are 'by ref' arguments in WCF bad or good?
body: <p>I've recently seen a WCF service declaring operation contracts with <em>by ref</em> arguments. </p>
  
  <p>I don't know why this design decision was taken (operations are void), but furthermore, I'm not able - from my WCF knowledge - to say if this is a good practice or not. Or if this is not relevant.</p>
  
  <p>What do you think?</p>