I read a good quote last night. The book is about the end of WWII and covers (among other things) the mass rapes by the Soviet Army. After the war ended, Germany was completely destroyed, many of the men were dead or in prison camps and the women turned to prostitution to stay alive. The author (Antony Beavor) writes "there is a fine line between prostitution and rape."
The difference between rape and prostitution, especially when there is a very real difference in power between the individuals involved, is the question that one needs to ask when a First World tourist is hiring sex workers in a Third World country. It may look like a mutually consensual arrangement, but is it? I think the answer to that questions bears directly on one's qualification to represent themselves as an advocate for victims of sexual abuse.