- Alternative Sexual Behavior
- Anthology
- Art
- Biography
- Bondage
- Case studies
- Chastity
- Clinical Psychology
- Community
- Consent
- Couples
- Entertainment & Performing Arts - General
- Erotic art
- Erotica
- Ethical non-monogamy
- Ethnography
- Female sexuality
- Feminism
- Fiction
- Fiction, anthologies (multiple authors)
- Fiction, erotica, general
- Gay & Lesbian studies
- Gay Culture
- Gay men -- Sexual behavior.
- Gay Studies