RewriteCond %{HTTP_REFERER} !^http://(.+\.)?bestpicturesof\.com/ [NC]
RewriteCond %{HTTP_REFERER} !^http://(.+\.)?blekko\.com/ [NC]
RewriteCond %{HTTP_REFERER} !^http://(.+\.)?devilfinder\.com/ [NC]
RewriteCond %{HTTP_REFERER} !^http://(.+\.)?dogpile\.co\.uk/ [NC]
RewriteCond %{HTTP_REFERER} !^http://(.+\.)?gensun\.org/ [NC]
RewriteCond %{HTTP_REFERER} !^http://(.+\.)?kwzf\.net/ [NC]