I have never heard it used in a complimentary way. I have had guys call me trollop in what seemed a complimentary way. But that is as close as I've heard.
ive heard it used as an acceptance of friendship. Like some guys i know just go "You knwo what? Youre a whore!" its kind of a mateship thing. Nice bunch of guys though....
i refer to myself as a whore sometimes, but most people don't dare call me that or even agree with me really. but it's true, i'm as hormonal as a teenage boy.
A whore is a woman who sleeps with a married man.. I sometimes don't even see it as an insult cause if it's true, it's a justifiable name.