Lesbians watching gay porn: fluid sexuality or a second wave hangover?

This post was borne out of a recent discussion with a good friend of mine, Harriet, who is a self-identified lesbian. (I include the phrase self-identified here deliberately: I realise her propensity to prefer the company and sex of woman does not categorise her as a lesbian, but it is a term she very comfortably uses herself). She was talking about going to a sex party, and I, in what I perceived to be ignorance, asked her what her interest...