On the one hand, it is sad to see disrespectful language written about even the worst of providers (or johns). After all, this board is supposed to be informative, not derisive. No matter how poor the session, using such demeaning terminology only serves to inflame and injure, it does not contribute anything additional to a simple post warning hobbyists to stay clear.
On the other hand, providers taking the stance that "you pay, you play," tends to abrogate their own involvement or responsibility. Although it may be wrong to take money back once you have left it on the dresser, hobbyists have a right to evaluate a session in terms of some type of cost to service ratio. For example, if they are not satisfied at an incall establishment, they can merely withhold a gratuity. With an Indie, it is admittedly more problematic, but they should be able to fashion a compromise, where the client can tell the provider that the services were not up to his expectations, and he would like a partial refund.
I am cognizant of the manifold difficulties inherent in this plan, but the more general point is that providers and johns need to be open to criticism on both sides. If a session does not meet expectations, it perhaps could be a simple case of YMMV, in which case the provider is also aware that she did give her best. In that scenario, what's wrong with a john asking for some cash back? If the provider feels she gave her best, under difficult circumstances, she might simply be honest and say, "well you weren't clean so the HJ is the best I could do."
Forthrightness might serve everyone well here, as we negotiate arrangements with each other. But using harsh invective and demeaning descriptions, on either side, only polarizes, it does not bring us together.