I can't see this being anything but awkward and dangerous. At least with sex work, or a strip club, theres no question as to what people's motives are or what to expect. One thing I see on that site is how its advertised on mainstream publications. This means that this info is being seen by women who would never be providers, but thinking they can make easy money, and deluding themselves thinking "oh, its not sexual" or "these are just lonely guys that need someone to talk too he wont try anything". Say for example you do get sexually aroused though, and they take offense....or if you do get "more" they could always say you pressured them into it, that could be very bad for you real quick. Being alone with her....its your word against hers.