http://www.dayom.com/playboy/playboy_cybergirl_of_the_week_cassie_keller/
http://www.myspace.com/cass_k
http://www.playboy.co.uk/girls/us-cyber-girl/197229/1/Cassie-Keller/
http://www.metacafe.com/watch/3114065/playboy_cyber_girl_cassie_keller/
http://www.youtube.com/watch?v=L-O-Pb4W7K4
http://www.lettherebeporn.com/galleries/2009/1/playboy_cybergirl_of_the_week_cassie_keller/