lee, there's been a HUGE vampire erotica market loooong before twilight.

as to whether there's a market, i expect there will be women in that market - but on the other hand, a lot of chicks i know were turned on by the young lestat and what's-his-name (stephan?).

unfortunately i expect anyone who tries it is likely to do it poorly. and i don't think this would be a niche that would work out well if done poorly.