I watched a video (not porn) of a real dominatrix talking about what she does. Now I know it all. It's pretty interesting in a scary kind of way, accept she eventually says she doesn't actually hate men at all, she just actually understands them.
I overheard some one talking about it and saying this lass he shags likes it but he doesn't know wtf he's going to do if it goes wrong and it could because he really goes for it.