title: Should whitespace characters be allowed in a password?
body: <p>I've tried different sites/products and this seems to be split fairly evenly. Windows 7 and Gmail allow you to insert spaces in your password. Hotmail and Twitter do not.</p>
  
  <p>While allowing spaces in a password increases the complexity of a password, it seems like many sites/programs do not allow them. Is there a good reason to allow/disallow spaces?</p>