"But they ARE prostitutes, after all, are they not?"

Well, I beg to differ. I for one, view them (the boys offering massage) in a different light. They have a service to sell, that is, their massage skill. They are therefore providing a service other than sex, which may be a subsidiary service they could perform. This differs from the boys at the go-go bars where the sole service they provide is sex, and so technically, they could be called prostitutes.

I agree with Icon though, that being gay or straight should not be an issue if they choose to work in such an industry. They should be willing to perform what is asked of them, without any qualms. In reality, of course, as Icon pointed out, it's increasingly harder to get that service-oriented mentality in such boys.