I have to agree with Tojo, Russell and the others - my girl is my most prised possession, and I want her to know that and be proud of who and what she is. Her pride in herself and in her service to me are both things that please me greatly. I may use derogatory terms - whore, slut - but she knows that she is neither - but a much loved and cherished slave who has given me a gift of extreme value in her total submission to me.
I really wonder at dominants who feel they have to humiliate and degrade a girl by taking away her self esteem and pride in who she is. Yes I use humiliation with my girl - but never in a way that leaves her feeling worthless to me.