SetEnvIfNoCase Request_URI  ".(jpg|jpeg|png|gif)"	hotlinker
SetEnvIfNoCase Referer      ^(http(s)?://(www\.)?(site2.com|site3.com|site4.com|site5.com)|$) !hotlinker
CustomLog logs/poachers_log combined env=hotlinker 
<FilesMatch ".(jpg|jpeg|png|gif)">
Order Deny,Allow
Deny from env=hotlinker
</FilesMatch>