Mohanraj's writing frequently explores issues of cultural identity. She has noted in interviews that she feels the complexity of such issues in her own life: "When people ask me what my identity is, I could say I'm Sri Lankan-American ... I could say I was raised Catholic but now I'm agnostic. I could say I've been called a queer, because although I've been with a man the past 17 years, I'm bisexual." She is also something of a sexuality activist; she founded and moderates the Internet Erotica Writers' Workshop, and was a former moderator for soc.sexuality.general.