.htaccess prevent hotlinking

If you have problems with other websites stealing your bandwidth, and you want to prevent hotlinking, use following snippet and place code in your htaccess file:

RewriteEngine On
RewriteCond %{HTTP_REFERER} !^http://(.+\.)?mywebsiteurl\.com/ [NC]
RewriteCond %{HTTP_REFERER} !^$
RewriteRule .*\.(jpg|gif|bmp|png)$ http://hotlnk.mywebsiteurl.com/hotlnkingisnotallowed.jpg [L]