Contains 11 papers about diverse aspects of sex work across cultures: condom use by transgender female sex workers: the association between mental health issues and unprotected sex: the influence of structural intervention in reducing biologically sexually transmitted infections (STIs): the ‘hidden’ population of women who solicit clients in private locations off the street: stigma resistance among male sex workers in Canada: the relationship between childhood sexual abuse and subsequent involvement in sex work: health services among male sex workers in Argentina: how the intersection between race/ethnicity affects female sex workers in Los Angeles: how sex workers deal with the negativity that surrounds their profession: job-related risk and safety for sex workers in Canada: legal concerns and policy issues. This monograph has been co-published simultaneously as Journal of Psychology & Human Sexuality vol. 17 (2005), numbers 1/2.