This is a fascinating thread and as I read each new post I am left thinking that what is really at the heart of this discussion is limits. There is a great list of things that could come under the heading of humiliation but what is being expressed by almost everyone is that for them some things are accepted as part of their play and others are not, those that are not accepted are confused with being humiliation. Just because something is accepted, enjoyed or even sexually exciting doesn't stop it from being an act of humiliation. Simply wearing a collar is a form of humiliation but I have read on many an occasion tender and loving words written by subs who have chosen to wear their Masters collar and the profound effect this has on them. This, I feel, is becuse deep down they know it to be a humiliating act but because of how (and with who) it takes place the humiliation is converted into pleasure.

Hope I expressed myself clearly there as I am a Master and do not wish to talk to subs about things in which they have far more experience than me.