Atypical sexual behavior

http://www.usu.edu/openshaw/3110/3110ppt/atysex/AtypicalSexualBehavior_files/frame.htm

Psychology Today: The Pleasure of the Pain

http://www.psychologytoday.com/htdocs/prod/ptoarticle/pto-19990901-000039.asp

Bondage safety advice

http://www.bedroombondage.com/bondageu/drbondage/

Psychology Today: Knocking Their Socks Off

http://www.psychologytoday.com/htdocs/prod/ptoarticle/pto-19930701-000021.asp