Following the examples of VIDA, Niall Harrison does the gender balance numbers for science fiction on the Strange Horizons blog, with The SF Count. "The good news." he writes, "is that we're not more imbalanced than the mainstream venues; that bad news is that we're not really any less imbalanced, either."
Sort of makes it clear why it's a major occasion for Aqueduct Press when any of its books gets reviewed. The red and blue pie charts are absolutely brilliant.