I think some key information threads would be more beneficial then the "Ladies Only". The E-creeps always end up invading those anyways.
If a women has a question, especially if it is female-centric, usually other females have the drive to answer it. If guys have any knowledge they can answer it too. I just don't think we have enough female-users to justify a female only section, it would likely be dead most of the time.
PowderHound and TreeNinja