Sexual economics provides the most accurate model for understanding social aspects of human sexuality. I have been writing about sexual economics from the 1980, first in print publications, and from the mid-1990's online.
I also set up a number of dedicated domains, such as:
The domain sextourism.org in particular dealt with aspects of sexual economics in the temporary migration of Western men and women to poorer countries, and of women of poorer countries to the US and Europe. Prostitution wasn't a topic on any of the domains.
My articles are now combined on: sergekreutz.com