As my themes have copyrights at the bottom of their pages and people usually click them which sends them to either
http://www.griffin-webpages.com or
http://www.clanz.biz i am able to trace back to who is using the Darkness theme.
Here r some sites which use the theme.
http://www.otd-clan.org/ http://www.acasylum.com/forums/portal.php http://www.es.clanz.biz/forum/ http://www.sf.clanz.biz/forum/
I saw alot more before posting this message, but now i cant be bothered searching backwards again hehe. (hey its late at night
)