For the people who are clients, how important is it to you that a provider kisses? For myself, I consider it a very important part of the experience. A session isn't quite as fulfilling when a provider doesn't allow kissing. When calling a provider, the first two questions I usually ask are 1) Do you smoke? and 2) Do you kiss?
In your experience, what percentage of girls out there allow kissing? Maybe around 50%? I'm not sure.