title: Parameter separator in URLs, the case of misused question mark
body: <p>What I don't really understand is the benefit of using '?' instead of '&amp;' in urls:</p>
  
  <p><img src="https://i.stack.imgur.com/8FggC.png" alt="question mark vs ampersand"></p>
  
  <p>It makes nobody's life easier if we use a different character as the first separator character.
  Can you come up with a reasonable explanation?</p>
  
  <p>EDIT: after more research I found that "&amp;" can be a part of file name (terms&amp;conditions.html) so "?" is a good separator. But still I think using "?" for separators makes lives easier (from url generators and parsers point of view):</p>
  
  <p><img src="https://i.stack.imgur.com/eAhnN.png" alt="question mark as separator"></p>
  
  <p>Is there any advantage in using "&amp;" which is not clear at the first glance? </p>