Come to think of it, there hasn't ever been a good pornography discussion on this site—and this post probably isn't it—but some of the facts laid out in this American Sexuality article on the subject seem worth tucking away for future reference:

From research and the testimony of women who have been prostituted and used in pornography, we know that childhood sexual assault (which often leads victims to see their value in the world primarily as the ability to provide sexual pleasure for men) and economic hardship (a lack of meaningful employment choices at a livable wage) are key factors in many women’s decisions to enter the sex industry. (For a good summary of this evidence see Margaret Baldwin’s article "Split at the Root: Prostitution and Feminist Discourses of Law Reform," 5 Yale Journal of Law & Feminism 47, 1992.) We know how women in the sex industry—not all, but many—routinely dissociate to cope with what they do. We know that in one study of 130 street prostitutes, 68% met the diagnostic criteria for post-traumatic stress disorder. (For details on this, see the work of Melissa Farley, "Prostitution, Violence, and Post-Traumatic Stress Disorder.")

Clip. Good magazine, too, although I'm a little dismayed that left-wing critiques of Queer Eye for the Straight Guy haven't really advanced much in the past two years.