RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^
http://yourdomain.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.yourdomain.com.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://yourdomain.com:80.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://www.yourdomain.com:80.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://0.0.0.0.*$ [NC]
RewriteCond %{HTTP_REFERER} !^
http://0.0.0.0:80.*$ [NC]
RewriteRule .*[Jj][Pp][Gg]$|.*[Gg][Ii][Ff]$
http://www.yourdomain.com/hotlinkers.html
Works like a charm. Just replace the domain and ip with your domain and ip. You should have a time based redirect as well wich trows the hotlinkers to a url of your choise