title: Drupal 7 generated different <img src="path"> to different locations in filesystem - why?
body: <p>I'm not very familiar to Drupal and there is a behaviour I don't understand.
  Some image  go to example: /system/files/styles/produkt_newsevents/private/, some to
  /sites/default/files/styles/produkt_promoted/public/.</p>
  <p>Well, I found out that the path to /system/files/ is kind of virtual path. It doesn't exist in real.
  But why is it (it is generated with a view and a image style) gernerated? Is there a specail thing to do in Drupal, that this path private is generated only in this view? Because I don't realy need this virtual path to public Images.</p>