What exactly is bandwidth stealing, theft or traffic hotlinking?
Most often these terms are used when images are incorporated in a foreign Web site's own. When you call one's own side the image of the joys server is loaded and displayed, the traffic is then forcibly stolen from another website operator ''.
Here's a simple example: 

  <img src='http://www.irgendeinfremderserver.de/das_bild_gefaellt_mir.jpg' alt="" title="" />

My example:
bilddiebstahl mit htaccess verhindern vorher Bilderdiebstahl und Traffic Klau mit .htaccess verhindern

Who wants to prevent at least two possibilities:

The linked image can not load: 

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  RewriteCond% (HTTP_REFERER) ^ http: \ / \ / (www \.)? Hannes-Schurig \. Com \ / [NC]
 RewriteCond% (HTTP_REFERER) ^ $
 RewriteRule \. (Jpe? G | gif | png) $ - [F]

bilddiebstahl mit htaccess verhindern deaktivieren Bilderdiebstahl und Traffic Klau mit .htaccess verhindern

Instead of the linked image is a different picture appears. So you can realize, for example, the following: 

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  <FilesMatch "\.(gif|jpe?g|png|bmp)$">
 RewriteEngine on
 RewriteCond% (HTTP_REFERER) ^ $
 RewriteCond% (HTTP_REFERER) ^ http:// (www \.)? Hannes-schurig.de / .* $ [NC]
 RewriteCond% (REQUEST_FILENAME)! Trafficklau.jpg $
 RewriteRule .* \. (Gif | jpe? G | png | bmp) $ http://stuff.hannes-schurig.de/img/trafficklau.jpg [R]
 </> Files match

bilddiebstahl mit htaccess verhindern ersetzen Bilderdiebstahl und Traffic Klau mit .htaccess verhindern

I will not stop for me or somehow redirect it, as my web host gives me unlimited traffic. There might also be good for me if my pictures are used everywhere, but I have nothing.
Have you before, disable Fremdverlinken or maybe you do it long ago? Does that make any sense nowadays to prevent from it? Finally, you have traffic at 80% of the web host for free or soo many GB of traffic that some images do not pull much out.