"Whoreism" is the philosophy or approach to life which advocates promiscuity and/or manipulation of the opposite sex in order to advance one's agenda (such as material gain).
Some contemporary pop stars are said to be practioners of "Whoreism".
Ex. Many people say that feminism has unfortunately evolved into whoreism in the new millenium. Ms. Spears is often said to be a practioner of "Whoreism".